Jasonchin
I just performed an experiment to test your theory.I took a tape measure and measured. Head to toe 171.2 cm;navel to toe 101.5cm
Hip to toe 102.8 cm Knee to toe 51 cm. Shoulder to figertips 75.4 c.
Elbow to figertips 45.8
This results in the following ratios. 171.2/101.5 equals 1.6
102.8/51 equals 2.0. 75.4/45.8 equals 1.6
You may draw your own conclusions from these data.