Home / 220,772.13-331,207.55-80,530.76

Finding the Fourth Proportional to 220,772.13, 331,207.55 and 80,530.76

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Solution

The fourth proportional to 220,772.13, 331,207.55 and 80,530.76 is: 120,814.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,772.13 : 331,207.55 = 80,530.76 : x
  2. Step 2: Convert to fraction form
    220,772.13/331,207.55 = 80,530.76/x
  3. Step 3: Cross multiply
    220,772.13x = 331,207.55 × 80,530.76
  4. Step 4: Simplify right side
    220,772.13x = 26,672,393,660.55
  5. Step 5: Solve for x
    x = 26,672,393,660.55/220,772.13
  6. Step 6: Final answer
    x = 120,814.13

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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.