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Finding the Fourth Proportional to 123,670.23, 185,520.12 and 43,691.64

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Solution

The fourth proportional to 123,670.23, 185,520.12 and 43,691.64 is: 65,542.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,670.23 : 185,520.12 = 43,691.64 : x
  2. Step 2: Convert to fraction form
    123,670.23/185,520.12 = 43,691.64/x
  3. Step 3: Cross multiply
    123,670.23x = 185,520.12 × 43,691.64
  4. Step 4: Simplify right side
    123,670.23x = 8,105,678,295.80
  5. Step 5: Solve for x
    x = 8,105,678,295.80/123,670.23
  6. Step 6: Final answer
    x = 65,542.68

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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.