Home / 80,129,998.80-120,194,998.20-49,896,910.80

Finding the Fourth Proportional to 80,129,998.80, 120,194,998.20 and 49,896,910.80

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Solution

The fourth proportional to 80,129,998.80, 120,194,998.20 and 49,896,910.80 is: 74,845,366.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,129,998.80 : 120,194,998.20 = 49,896,910.80 : x
  2. Step 2: Convert to fraction form
    80,129,998.80/120,194,998.20 = 49,896,910.80/x
  3. Step 3: Cross multiply
    80,129,998.80x = 120,194,998.20 × 49,896,910.80
  4. Step 4: Simplify right side
    80,129,998.80x = 5,997,359,103,791,560
  5. Step 5: Solve for x
    x = 5,997,359,103,791,560/80,129,998.80
  6. Step 6: Final answer
    x = 74,845,366.20

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Double scale
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Similar ratio
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1.5x scale

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.