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Finding the Fourth Proportional to 157,287.43, 217,062.77 and 89,310.71

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Solution

The fourth proportional to 157,287.43, 217,062.77 and 89,310.71 is: 123,252.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,287.43 : 217,062.77 = 89,310.71 : x
  2. Step 2: Convert to fraction form
    157,287.43/217,062.77 = 89,310.71/x
  3. Step 3: Cross multiply
    157,287.43x = 217,062.77 × 89,310.71
  4. Step 4: Simplify right side
    157,287.43x = 19,386,030,103.27
  5. Step 5: Solve for x
    x = 19,386,030,103.27/157,287.43
  6. Step 6: Final answer
    x = 123,252.25

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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.