Home / 120,132.29-165,754.98-71,724.78

Finding the Fourth Proportional to 120,132.29, 165,754.98 and 71,724.78

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Solution

The fourth proportional to 120,132.29, 165,754.98 and 71,724.78 is: 98,963.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,132.29 : 165,754.98 = 71,724.78 : x
  2. Step 2: Convert to fraction form
    120,132.29/165,754.98 = 71,724.78/x
  3. Step 3: Cross multiply
    120,132.29x = 165,754.98 × 71,724.78
  4. Step 4: Simplify right side
    120,132.29x = 11,888,739,474.40
  5. Step 5: Solve for x
    x = 11,888,739,474.40/120,132.29
  6. Step 6: Final answer
    x = 98,963.73

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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.