Home / 128,304,266.20-192,456,399.30-82,387,763.80

Finding the Fourth Proportional to 128,304,266.20, 192,456,399.30 and 82,387,763.80

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Solution

The fourth proportional to 128,304,266.20, 192,456,399.30 and 82,387,763.80 is: 123,581,645.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,304,266.20 : 192,456,399.30 = 82,387,763.80 : x
  2. Step 2: Convert to fraction form
    128,304,266.20/192,456,399.30 = 82,387,763.80/x
  3. Step 3: Cross multiply
    128,304,266.20x = 192,456,399.30 × 82,387,763.80
  4. Step 4: Simplify right side
    128,304,266.20x = 15,856,052,367,326,886
  5. Step 5: Solve for x
    x = 15,856,052,367,326,886/128,304,266.20
  6. Step 6: Final answer
    x = 123,581,645.70

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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.