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Finding the Fourth Proportional to 125,882.78, 173,679.05 and 71,425.94

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Solution

The fourth proportional to 125,882.78, 173,679.05 and 71,425.94 is: 98,545.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,882.78 : 173,679.05 = 71,425.94 : x
  2. Step 2: Convert to fraction form
    125,882.78/173,679.05 = 71,425.94/x
  3. Step 3: Cross multiply
    125,882.78x = 173,679.05 × 71,425.94
  4. Step 4: Simplify right side
    125,882.78x = 12,405,188,714.73
  5. Step 5: Solve for x
    x = 12,405,188,714.73/125,882.78
  6. Step 6: Final answer
    x = 98,545.56

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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.