This is not really a complete problem statement. All I can do is guess that y ou are to find the RATIO of 153 inches to 19 feet. If that's correct, here's what to do:
153 inches 1 foot 153 51 3
--------------- = --------------------------- = ----------- = -------- = --------- (answer)
19 feet [12 inches ] 1428 476 28
Note that this is a ratio and has no units of measurement.
