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Finding the Fourth Proportional to 125,229.25, 172,834.08 and 77,497.97

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Solution

The fourth proportional to 125,229.25, 172,834.08 and 77,497.97 is: 106,958.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,229.25 : 172,834.08 = 77,497.97 : x
  2. Step 2: Convert to fraction form
    125,229.25/172,834.08 = 77,497.97/x
  3. Step 3: Cross multiply
    125,229.25x = 172,834.08 × 77,497.97
  4. Step 4: Simplify right side
    125,229.25x = 13,394,290,778.90
  5. Step 5: Solve for x
    x = 13,394,290,778.90/125,229.25
  6. Step 6: Final answer
    x = 106,958.17

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1.5x scale

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.