Home / 86,524.20-129,863.10-74,082.60

Finding the Fourth Proportional to 86,524.20, 129,863.10 and 74,082.60

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Solution

The fourth proportional to 86,524.20, 129,863.10 and 74,082.60 is: 111,189.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,524.20 : 129,863.10 = 74,082.60 : x
  2. Step 2: Convert to fraction form
    86,524.20/129,863.10 = 74,082.60/x
  3. Step 3: Cross multiply
    86,524.20x = 129,863.10 × 74,082.60
  4. Step 4: Simplify right side
    86,524.20x = 9,620,596,092.06
  5. Step 5: Solve for x
    x = 9,620,596,092.06/86,524.20
  6. Step 6: Final answer
    x = 111,189.66

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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.