Home / 86,654.20-129,981.30-82,766.20

Finding the Fourth Proportional to 86,654.20, 129,981.30 and 82,766.20

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Solution

The fourth proportional to 86,654.20, 129,981.30 and 82,766.20 is: 124,149.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,654.20 : 129,981.30 = 82,766.20 : x
  2. Step 2: Convert to fraction form
    86,654.20/129,981.30 = 82,766.20/x
  3. Step 3: Cross multiply
    86,654.20x = 129,981.30 × 82,766.20
  4. Step 4: Simplify right side
    86,654.20x = 10,758,058,272.06
  5. Step 5: Solve for x
    x = 10,758,058,272.06/86,654.20
  6. Step 6: Final answer
    x = 124,149.30

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Similar ratio
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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.