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Finding the Fourth Proportional to 125,170.56, 187,753.78 and 30,401.53

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Solution

The fourth proportional to 125,170.56, 187,753.78 and 30,401.53 is: 45,601.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,170.56 : 187,753.78 = 30,401.53 : x
  2. Step 2: Convert to fraction form
    125,170.56/187,753.78 = 30,401.53/x
  3. Step 3: Cross multiply
    125,170.56x = 187,753.78 × 30,401.53
  4. Step 4: Simplify right side
    125,170.56x = 5,708,001,743.90
  5. Step 5: Solve for x
    x = 5,708,001,743.90/125,170.56
  6. Step 6: Final answer
    x = 45,601.79

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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.