Home / 120,862,843.20-181,294,264.80-84,512,278.80

Finding the Fourth Proportional to 120,862,843.20, 181,294,264.80 and 84,512,278.80

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Solution

The fourth proportional to 120,862,843.20, 181,294,264.80 and 84,512,278.80 is: 126,768,418.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,862,843.20 : 181,294,264.80 = 84,512,278.80 : x
  2. Step 2: Convert to fraction form
    120,862,843.20/181,294,264.80 = 84,512,278.80/x
  3. Step 3: Cross multiply
    120,862,843.20x = 181,294,264.80 × 84,512,278.80
  4. Step 4: Simplify right side
    120,862,843.20x = 15,321,591,451,618,626
  5. Step 5: Solve for x
    x = 15,321,591,451,618,626/120,862,843.20
  6. Step 6: Final answer
    x = 126,768,418.20

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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.