Home / 143,396.20-215,123.04-80,306.08

Finding the Fourth Proportional to 143,396.20, 215,123.04 and 80,306.08

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Solution

The fourth proportional to 143,396.20, 215,123.04 and 80,306.08 is: 120,475.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,396.20 : 215,123.04 = 80,306.08 : x
  2. Step 2: Convert to fraction form
    143,396.20/215,123.04 = 80,306.08/x
  3. Step 3: Cross multiply
    143,396.20x = 215,123.04 × 80,306.08
  4. Step 4: Simplify right side
    143,396.20x = 17,275,688,060.08
  5. Step 5: Solve for x
    x = 17,275,688,060.08/143,396.20
  6. Step 6: Final answer
    x = 120,475.22

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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.