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Finding the Fourth Proportional to 125,248.71, 172,839.65 and 71,532.62

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Solution

The fourth proportional to 125,248.71, 172,839.65 and 71,532.62 is: 98,712.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,248.71 : 172,839.65 = 71,532.62 : x
  2. Step 2: Convert to fraction form
    125,248.71/172,839.65 = 71,532.62/x
  3. Step 3: Cross multiply
    125,248.71x = 172,839.65 × 71,532.62
  4. Step 4: Simplify right side
    125,248.71x = 12,363,671,782.52
  5. Step 5: Solve for x
    x = 12,363,671,782.52/125,248.71
  6. Step 6: Final answer
    x = 98,712.97

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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.