Home / 123,517.11-170,387.87-75,133.83

Finding the Fourth Proportional to 123,517.11, 170,387.87 and 75,133.83

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Solution

The fourth proportional to 123,517.11, 170,387.87 and 75,133.83 is: 103,644.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,517.11 : 170,387.87 = 75,133.83 : x
  2. Step 2: Convert to fraction form
    123,517.11/170,387.87 = 75,133.83/x
  3. Step 3: Cross multiply
    123,517.11x = 170,387.87 × 75,133.83
  4. Step 4: Simplify right side
    123,517.11x = 12,801,892,882.97
  5. Step 5: Solve for x
    x = 12,801,892,882.97/123,517.11
  6. Step 6: Final answer
    x = 103,644.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.