Home / 87,660,198.80-131,490,298.20-39,791,142.80

Finding the Fourth Proportional to 87,660,198.80, 131,490,298.20 and 39,791,142.80

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Solution

The fourth proportional to 87,660,198.80, 131,490,298.20 and 39,791,142.80 is: 59,686,714.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,660,198.80 : 131,490,298.20 = 39,791,142.80 : x
  2. Step 2: Convert to fraction form
    87,660,198.80/131,490,298.20 = 39,791,142.80/x
  3. Step 3: Cross multiply
    87,660,198.80x = 131,490,298.20 × 39,791,142.80
  4. Step 4: Simplify right side
    87,660,198.80x = 5,232,149,232,490,783
  5. Step 5: Solve for x
    x = 5,232,149,232,490,783/87,660,198.80
  6. Step 6: Final answer
    x = 59,686,714.20

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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.