Time Dilation achieves isotropic Speed

When Lorentz invented time dilation as part of his contraction
hypothesis he did so to allow the speed of light to remain constant.
He thought that if the length of a moving object contracted, its
time had to slow down or the speed of light would not be constant.
However, Lorentz achieved the opposite effect with his thought
process.

Example:
An object of 100m length traveling with a speed of 200000km/sec would
according to the Lorentz transformation

gamma = 1/sqrt(1-200000km/sec^2/300000km/sec^2) = 1.3416408

shrink to 74.535599m (100/gamma). At rest, light will cover 100m in
100m/300000000m/sec = 0.000000333333sec. Time dilation will expand
this fraction of time to 0.00000044721360 seconds
(0.000000333333secs*1.3416408) for an object with the speed of
200000km/sec.

In the dilated time of 0.00000044721360 seconds, light at 300000000m/
sec will transit a distance of 134.16408m (300000000m/
sec*0.000000044721360sec) but if light had slowed down to 223607021m/
sec, light would exactly cover the original 100m in the dilated time
of 0.000000044721360sec (223607021m/sec*0.00000044721360sec=100m).
Clearly, if the speed of light had not been reduced, the law of
physics d=v*t would have been violated.

Peter Riedt