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Finding the Fourth Proportional to 123,670.35, 185,520.31 and 43,691.76

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Solution

The fourth proportional to 123,670.35, 185,520.31 and 43,691.76 is: 65,542.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,670.35 : 185,520.31 = 43,691.76 : x
  2. Step 2: Convert to fraction form
    123,670.35/185,520.31 = 43,691.76/x
  3. Step 3: Cross multiply
    123,670.35x = 185,520.31 × 43,691.76
  4. Step 4: Simplify right side
    123,670.35x = 8,105,708,750.42
  5. Step 5: Solve for x
    x = 8,105,708,750.42/123,670.35
  6. Step 6: Final answer
    x = 65,542.86

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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.