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Finding the Fourth Proportional to 123,939.29, 185,907.44 and 45,052.85

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Solution

The fourth proportional to 123,939.29, 185,907.44 and 45,052.85 is: 67,578.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,939.29 : 185,907.44 = 45,052.85 : x
  2. Step 2: Convert to fraction form
    123,939.29/185,907.44 = 45,052.85/x
  3. Step 3: Cross multiply
    123,939.29x = 185,907.44 × 45,052.85
  4. Step 4: Simplify right side
    123,939.29x = 8,375,659,191.30
  5. Step 5: Solve for x
    x = 8,375,659,191.30/123,939.29
  6. Step 6: Final answer
    x = 67,578.73

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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.