Home / 87,660,198.30-131,490,297.45-39,791,142.30

Finding the Fourth Proportional to 87,660,198.30, 131,490,297.45 and 39,791,142.30

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Solution

The fourth proportional to 87,660,198.30, 131,490,297.45 and 39,791,142.30 is: 59,686,713.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,660,198.30 : 131,490,297.45 = 39,791,142.30 : x
  2. Step 2: Convert to fraction form
    87,660,198.30/131,490,297.45 = 39,791,142.30/x
  3. Step 3: Cross multiply
    87,660,198.30x = 131,490,297.45 × 39,791,142.30
  4. Step 4: Simplify right side
    87,660,198.30x = 5,232,149,136,902,277
  5. Step 5: Solve for x
    x = 5,232,149,136,902,277/87,660,198.30
  6. Step 6: Final answer
    x = 59,686,713.45

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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.