Home / 215,617.28-297,561-120,123.92

Finding the Fourth Proportional to 215,617.28, 297,561 and 120,123.92

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Solution

The fourth proportional to 215,617.28, 297,561 and 120,123.92 is: 165,776.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,617.28 : 297,561 = 120,123.92 : x
  2. Step 2: Convert to fraction form
    215,617.28/297,561 = 120,123.92/x
  3. Step 3: Cross multiply
    215,617.28x = 297,561 × 120,123.92
  4. Step 4: Simplify right side
    215,617.28x = 35,744,193,759.12
  5. Step 5: Solve for x
    x = 35,744,193,759.12/215,617.28
  6. Step 6: Final answer
    x = 165,776.11

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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.