Home / 82,482,136.20-123,723,204.30-81,206,677.80

Finding the Fourth Proportional to 82,482,136.20, 123,723,204.30 and 81,206,677.80

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Solution

The fourth proportional to 82,482,136.20, 123,723,204.30 and 81,206,677.80 is: 121,810,016.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,482,136.20 : 123,723,204.30 = 81,206,677.80 : x
  2. Step 2: Convert to fraction form
    82,482,136.20/123,723,204.30 = 81,206,677.80/x
  3. Step 3: Cross multiply
    82,482,136.20x = 123,723,204.30 × 81,206,677.80
  4. Step 4: Simplify right side
    82,482,136.20x = 10,047,150,387,973,674
  5. Step 5: Solve for x
    x = 10,047,150,387,973,674/82,482,136.20
  6. Step 6: Final answer
    x = 121,810,016.70

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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.