Home / 82,249.40-123,374.10-80,937.20

Finding the Fourth Proportional to 82,249.40, 123,374.10 and 80,937.20

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Solution

The fourth proportional to 82,249.40, 123,374.10 and 80,937.20 is: 121,405.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,249.40 : 123,374.10 = 80,937.20 : x
  2. Step 2: Convert to fraction form
    82,249.40/123,374.10 = 80,937.20/x
  3. Step 3: Cross multiply
    82,249.40x = 123,374.10 × 80,937.20
  4. Step 4: Simplify right side
    82,249.40x = 9,985,554,206.52
  5. Step 5: Solve for x
    x = 9,985,554,206.52/82,249.40
  6. Step 6: Final answer
    x = 121,405.80

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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.