Home / 138,786,069.70-208,029,805.35-52,491,132.10

Finding the Fourth Proportional to 138,786,069.70, 208,029,805.35 and 52,491,132.10

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Solution

The fourth proportional to 138,786,069.70, 208,029,805.35 and 52,491,132.10 is: 78,680,230.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,786,069.70 : 208,029,805.35 = 52,491,132.10 : x
  2. Step 2: Convert to fraction form
    138,786,069.70/208,029,805.35 = 52,491,132.10/x
  3. Step 3: Cross multiply
    138,786,069.70x = 208,029,805.35 × 52,491,132.10
  4. Step 4: Simplify right side
    138,786,069.70x = 10,919,719,993,364,136
  5. Step 5: Solve for x
    x = 10,919,719,993,364,136/138,786,069.70
  6. Step 6: Final answer
    x = 78,680,230.78

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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.