Finding the Fourth Proportional to 157,935.13, 217,949.95 and 86,315.14
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Solution
The fourth proportional to 157,935.13, 217,949.95 and 86,315.14 is: 119,114.60
Step by Step Solution
- Step 1: Write the proportion equation
157,935.13 : 217,949.95 = 86,315.14 : x - Step 2: Convert to fraction form
157,935.13/217,949.95 = 86,315.14/x - Step 3: Cross multiply
157,935.13x = 217,949.95 × 86,315.14 - Step 4: Simplify right side
157,935.13x = 18,812,380,447.24 - Step 5: Solve for x
x = 18,812,380,447.24/157,935.13 - Step 6: Final answer
x = 119,114.60
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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.