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Finding the Fourth Proportional to 125,146.87, 187,720.94 and 31,652.71

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Solution

The fourth proportional to 125,146.87, 187,720.94 and 31,652.71 is: 47,479.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,146.87 : 187,720.94 = 31,652.71 : x
  2. Step 2: Convert to fraction form
    125,146.87/187,720.94 = 31,652.71/x
  3. Step 3: Cross multiply
    125,146.87x = 187,720.94 × 31,652.71
  4. Step 4: Simplify right side
    125,146.87x = 5,941,876,474.75
  5. Step 5: Solve for x
    x = 5,941,876,474.75/125,146.87
  6. Step 6: Final answer
    x = 47,479.23

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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.