Home / 87,121.44-129,575.52-85,448.16

Finding the Fourth Proportional to 87,121.44, 129,575.52 and 85,448.16

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Solution

The fourth proportional to 87,121.44, 129,575.52 and 85,448.16 is: 127,086.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,121.44 : 129,575.52 = 85,448.16 : x
  2. Step 2: Convert to fraction form
    87,121.44/129,575.52 = 85,448.16/x
  3. Step 3: Cross multiply
    87,121.44x = 129,575.52 × 85,448.16
  4. Step 4: Simplify right side
    87,121.44x = 11,071,989,765.04
  5. Step 5: Solve for x
    x = 11,071,989,765.04/87,121.44
  6. Step 6: Final answer
    x = 127,086.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.