Home / 82,110.20-123,165.30-72,924.80

Finding the Fourth Proportional to 82,110.20, 123,165.30 and 72,924.80

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Solution

The fourth proportional to 82,110.20, 123,165.30 and 72,924.80 is: 109,387.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,110.20 : 123,165.30 = 72,924.80 : x
  2. Step 2: Convert to fraction form
    82,110.20/123,165.30 = 72,924.80/x
  3. Step 3: Cross multiply
    82,110.20x = 123,165.30 × 72,924.80
  4. Step 4: Simplify right side
    82,110.20x = 8,981,804,869.44
  5. Step 5: Solve for x
    x = 8,981,804,869.44/82,110.20
  6. Step 6: Final answer
    x = 109,387.20

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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.