Home / 157,286.43-217,061.39-89,309.71

Finding the Fourth Proportional to 157,286.43, 217,061.39 and 89,309.71

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Solution

The fourth proportional to 157,286.43, 217,061.39 and 89,309.71 is: 123,250.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,286.43 : 217,061.39 = 89,309.71 : x
  2. Step 2: Convert to fraction form
    157,286.43/217,061.39 = 89,309.71/x
  3. Step 3: Cross multiply
    157,286.43x = 217,061.39 × 89,309.71
  4. Step 4: Simplify right side
    157,286.43x = 19,385,689,793.10
  5. Step 5: Solve for x
    x = 19,385,689,793.10/157,286.43
  6. Step 6: Final answer
    x = 123,250.87

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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.