Finding the Fourth Proportional to 157,201.14, 216,937.20 and 85,581.66
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Solution
The fourth proportional to 157,201.14, 216,937.20 and 85,581.66 is: 118,102.49
Step by Step Solution
- Step 1: Write the proportion equation
157,201.14 : 216,937.20 = 85,581.66 : x - Step 2: Convert to fraction form
157,201.14/216,937.20 = 85,581.66/x - Step 3: Cross multiply
157,201.14x = 216,937.20 × 85,581.66 - Step 4: Simplify right side
157,201.14x = 18,565,845,691.75 - Step 5: Solve for x
x = 18,565,845,691.75/157,201.14 - Step 6: Final answer
x = 118,102.49
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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.