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Finding the Fourth Proportional to 125,000.58, 187,410.43 and 74,279.38

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Solution

The fourth proportional to 125,000.58, 187,410.43 and 74,279.38 is: 111,365.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,000.58 : 187,410.43 = 74,279.38 : x
  2. Step 2: Convert to fraction form
    125,000.58/187,410.43 = 74,279.38/x
  3. Step 3: Cross multiply
    125,000.58x = 187,410.43 × 74,279.38
  4. Step 4: Simplify right side
    125,000.58x = 13,920,730,545.93
  5. Step 5: Solve for x
    x = 13,920,730,545.93/125,000.58
  6. Step 6: Final answer
    x = 111,365.33

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.