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Finding the Fourth Proportional to 124,951.80, 187,470.90 and 120,631.80

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Solution

The fourth proportional to 124,951.80, 187,470.90 and 120,631.80 is: 180,989.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,951.80 : 187,470.90 = 120,631.80 : x
  2. Step 2: Convert to fraction form
    124,951.80/187,470.90 = 120,631.80/x
  3. Step 3: Cross multiply
    124,951.80x = 187,470.90 × 120,631.80
  4. Step 4: Simplify right side
    124,951.80x = 22,614,952,114.62
  5. Step 5: Solve for x
    x = 22,614,952,114.62/124,951.80
  6. Step 6: Final answer
    x = 180,989.41

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1.5x scale

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.