Home / 99,716.68-149,572.78-82,116.04

Finding the Fourth Proportional to 99,716.68, 149,572.78 and 82,116.04

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Solution

The fourth proportional to 99,716.68, 149,572.78 and 82,116.04 is: 123,172.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,716.68 : 149,572.78 = 82,116.04 : x
  2. Step 2: Convert to fraction form
    99,716.68/149,572.78 = 82,116.04/x
  3. Step 3: Cross multiply
    99,716.68x = 149,572.78 × 82,116.04
  4. Step 4: Simplify right side
    99,716.68x = 12,282,324,385.39
  5. Step 5: Solve for x
    x = 12,282,324,385.39/99,716.68
  6. Step 6: Final answer
    x = 123,172.22

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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.