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Finding the Fourth Proportional to 123,940.41, 185,909.13 and 45,053.97

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Solution

The fourth proportional to 123,940.41, 185,909.13 and 45,053.97 is: 67,580.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,940.41 : 185,909.13 = 45,053.97 : x
  2. Step 2: Convert to fraction form
    123,940.41/185,909.13 = 45,053.97/x
  3. Step 3: Cross multiply
    123,940.41x = 185,909.13 × 45,053.97
  4. Step 4: Simplify right side
    123,940.41x = 8,375,944,365.75
  5. Step 5: Solve for x
    x = 8,375,944,365.75/123,940.41
  6. Step 6: Final answer
    x = 67,580.42

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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.