Finding the Fourth Proportional to 157,807,685.37, 217,781,331.39 and 88,193,064.18
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Solution
The fourth proportional to 157,807,685.37, 217,781,331.39 and 88,193,064.18 is: 121,710,187.25
Step by Step Solution
- Step 1: Write the proportion equation
157,807,685.37 : 217,781,331.39 = 88,193,064.18 : x - Step 2: Convert to fraction form
157,807,685.37/217,781,331.39 = 88,193,064.18/x - Step 3: Cross multiply
157,807,685.37x = 217,781,331.39 × 88,193,064.18 - Step 4: Simplify right side
157,807,685.37x = 19,206,802,936,484,120 - Step 5: Solve for x
x = 19,206,802,936,484,120/157,807,685.37 - Step 6: Final answer
x = 121,710,187.25
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.