Home / 99,841.28-149,761.92-68,581.76

Finding the Fourth Proportional to 99,841.28, 149,761.92 and 68,581.76

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Solution

The fourth proportional to 99,841.28, 149,761.92 and 68,581.76 is: 102,872.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,841.28 : 149,761.92 = 68,581.76 : x
  2. Step 2: Convert to fraction form
    99,841.28/149,761.92 = 68,581.76/x
  3. Step 3: Cross multiply
    99,841.28x = 149,761.92 × 68,581.76
  4. Step 4: Simplify right side
    99,841.28x = 10,270,936,054.58
  5. Step 5: Solve for x
    x = 10,270,936,054.58/99,841.28
  6. Step 6: Final answer
    x = 102,872.64

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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.