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Finding the Fourth Proportional to 125,229.31, 172,834.17 and 77,498.04

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Solution

The fourth proportional to 125,229.31, 172,834.17 and 77,498.04 is: 106,958.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,229.31 : 172,834.17 = 77,498.04 : x
  2. Step 2: Convert to fraction form
    125,229.31/172,834.17 = 77,498.04/x
  3. Step 3: Cross multiply
    125,229.31x = 172,834.17 × 77,498.04
  4. Step 4: Simplify right side
    125,229.31x = 13,394,309,420.03
  5. Step 5: Solve for x
    x = 13,394,309,420.03/125,229.31
  6. Step 6: Final answer
    x = 106,958.26

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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.