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Finding the Fourth Proportional to 135,978.52, 187,647.52 and 75,545.62

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Solution

The fourth proportional to 135,978.52, 187,647.52 and 75,545.62 is: 104,251.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,978.52 : 187,647.52 = 75,545.62 : x
  2. Step 2: Convert to fraction form
    135,978.52/187,647.52 = 75,545.62/x
  3. Step 3: Cross multiply
    135,978.52x = 187,647.52 × 75,545.62
  4. Step 4: Simplify right side
    135,978.52x = 14,175,948,239.86
  5. Step 5: Solve for x
    x = 14,175,948,239.86/135,978.52
  6. Step 6: Final answer
    x = 104,251.38

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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.