Home / 123,679.62-170,629.17-75,849.90

Finding the Fourth Proportional to 123,679.62, 170,629.17 and 75,849.90

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Solution

The fourth proportional to 123,679.62, 170,629.17 and 75,849.90 is: 104,642.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,679.62 : 170,629.17 = 75,849.90 : x
  2. Step 2: Convert to fraction form
    123,679.62/170,629.17 = 75,849.90/x
  3. Step 3: Cross multiply
    123,679.62x = 170,629.17 × 75,849.90
  4. Step 4: Simplify right side
    123,679.62x = 12,942,205,481.58
  5. Step 5: Solve for x
    x = 12,942,205,481.58/123,679.62
  6. Step 6: Final answer
    x = 104,642.99

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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.