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Finding the Fourth Proportional to 123,486.56, 185,229.84 and 29,991.68

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Solution

The fourth proportional to 123,486.56, 185,229.84 and 29,991.68 is: 44,987.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,486.56 : 185,229.84 = 29,991.68 : x
  2. Step 2: Convert to fraction form
    123,486.56/185,229.84 = 29,991.68/x
  3. Step 3: Cross multiply
    123,486.56x = 185,229.84 × 29,991.68
  4. Step 4: Simplify right side
    123,486.56x = 5,555,354,087.73
  5. Step 5: Solve for x
    x = 5,555,354,087.73/123,486.56
  6. Step 6: Final answer
    x = 44,987.52

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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.