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139 inches per second is about one-and-four-fifths times as fast as Michael Phelps
In other words, it's 1.8176 times the speed of Michael Phelps, and the speed of Michael Phelps is 0.55018 times that amount.
(at the Beijing Olympics, 2008; 200 m freestyle) (a.k.a. Michael Fred Phelps) (swimmer; 1985-)
Setting a world record, Michael Phelps swam the 200 m freestyle in 1:42.96 for an average speed of 76.4760 inches per second. Phelps would go on to win nine gold medals individually in the 2008 Olympics - more than all but eight of the competing nations.
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