Home / 218,517.12-301,553.28-123,019.20

Finding the Fourth Proportional to 218,517.12, 301,553.28 and 123,019.20

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Solution

The fourth proportional to 218,517.12, 301,553.28 and 123,019.20 is: 169,766.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,517.12 : 301,553.28 = 123,019.20 : x
  2. Step 2: Convert to fraction form
    218,517.12/301,553.28 = 123,019.20/x
  3. Step 3: Cross multiply
    218,517.12x = 301,553.28 × 123,019.20
  4. Step 4: Simplify right side
    218,517.12x = 37,096,843,262.98
  5. Step 5: Solve for x
    x = 37,096,843,262.98/218,517.12
  6. Step 6: Final answer
    x = 169,766.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.