Home / 86,375.39-129,321.09-65,248.97

Finding the Fourth Proportional to 86,375.39, 129,321.09 and 65,248.97

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Solution

The fourth proportional to 86,375.39, 129,321.09 and 65,248.97 is: 97,690.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,375.39 : 129,321.09 = 65,248.97 : x
  2. Step 2: Convert to fraction form
    86,375.39/129,321.09 = 65,248.97/x
  3. Step 3: Cross multiply
    86,375.39x = 129,321.09 × 65,248.97
  4. Step 4: Simplify right side
    86,375.39x = 8,438,067,275.17
  5. Step 5: Solve for x
    x = 8,438,067,275.17/86,375.39
  6. Step 6: Final answer
    x = 97,690.65

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1.5x scale

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.