Home / 86,344.11-129,516.17-81,471.15

Finding the Fourth Proportional to 86,344.11, 129,516.17 and 81,471.15

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Solution

The fourth proportional to 86,344.11, 129,516.17 and 81,471.15 is: 122,206.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,344.11 : 129,516.17 = 81,471.15 : x
  2. Step 2: Convert to fraction form
    86,344.11/129,516.17 = 81,471.15/x
  3. Step 3: Cross multiply
    86,344.11x = 129,516.17 × 81,471.15
  4. Step 4: Simplify right side
    86,344.11x = 10,551,830,906.14
  5. Step 5: Solve for x
    x = 10,551,830,906.14/86,344.11
  6. Step 6: Final answer
    x = 122,206.73

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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.