Home / 82,743.70-123,969.15-80,002.90

Finding the Fourth Proportional to 82,743.70, 123,969.15 and 80,002.90

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Solution

The fourth proportional to 82,743.70, 123,969.15 and 80,002.90 is: 119,862.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,743.70 : 123,969.15 = 80,002.90 : x
  2. Step 2: Convert to fraction form
    82,743.70/123,969.15 = 80,002.90/x
  3. Step 3: Cross multiply
    82,743.70x = 123,969.15 × 80,002.90
  4. Step 4: Simplify right side
    82,743.70x = 9,917,891,510.54
  5. Step 5: Solve for x
    x = 9,917,891,510.54/82,743.70
  6. Step 6: Final answer
    x = 119,862.80

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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.