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Finding the Fourth Proportional to 125,640, 173,372.40 and 73,951.62

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Solution

The fourth proportional to 125,640, 173,372.40 and 73,951.62 is: 102,046.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,640 : 173,372.40 = 73,951.62 : x
  2. Step 2: Convert to fraction form
    125,640/173,372.40 = 73,951.62/x
  3. Step 3: Cross multiply
    125,640x = 173,372.40 × 73,951.62
  4. Step 4: Simplify right side
    125,640x = 12,821,169,843.29
  5. Step 5: Solve for x
    x = 12,821,169,843.29/125,640
  6. Step 6: Final answer
    x = 102,046.88

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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.