Home / 146,768,123.70-220,320,147.15-86,217,966.90

Finding the Fourth Proportional to 146,768,123.70, 220,320,147.15 and 86,217,966.90

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Solution

The fourth proportional to 146,768,123.70, 220,320,147.15 and 86,217,966.90 is: 129,425,618.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    146,768,123.70 : 220,320,147.15 = 86,217,966.90 : x
  2. Step 2: Convert to fraction form
    146,768,123.70/220,320,147.15 = 86,217,966.90/x
  3. Step 3: Cross multiply
    146,768,123.70x = 220,320,147.15 × 86,217,966.90
  4. Step 4: Simplify right side
    146,768,123.70x = 18,995,555,154,381,832
  5. Step 5: Solve for x
    x = 18,995,555,154,381,832/146,768,123.70
  6. Step 6: Final answer
    x = 129,425,618.28

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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.