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Finding the Fourth Proportional to 157,488.48, 217,326.72 and 89,503.92

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Solution

The fourth proportional to 157,488.48, 217,326.72 and 89,503.92 is: 123,511.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,488.48 : 217,326.72 = 89,503.92 : x
  2. Step 2: Convert to fraction form
    157,488.48/217,326.72 = 89,503.92/x
  3. Step 3: Cross multiply
    157,488.48x = 217,326.72 × 89,503.92
  4. Step 4: Simplify right side
    157,488.48x = 19,451,593,360.74
  5. Step 5: Solve for x
    x = 19,451,593,360.74/157,488.48
  6. Step 6: Final answer
    x = 123,511.21

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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.