Home / 123,098.80-169,791.84-75,375.76

Finding the Fourth Proportional to 123,098.80, 169,791.84 and 75,375.76

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Solution

The fourth proportional to 123,098.80, 169,791.84 and 75,375.76 is: 103,966.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,098.80 : 169,791.84 = 75,375.76 : x
  2. Step 2: Convert to fraction form
    123,098.80/169,791.84 = 75,375.76/x
  3. Step 3: Cross multiply
    123,098.80x = 169,791.84 × 75,375.76
  4. Step 4: Simplify right side
    123,098.80x = 12,798,188,981.80
  5. Step 5: Solve for x
    x = 12,798,188,981.80/123,098.80
  6. Step 6: Final answer
    x = 103,966.81

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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.