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Finding the Fourth Proportional to 99,581,593.80, 149,372,390.70 and 67,057,404.60

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Solution

The fourth proportional to 99,581,593.80, 149,372,390.70 and 67,057,404.60 is: 100,586,106.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,581,593.80 : 149,372,390.70 = 67,057,404.60 : x
  2. Step 2: Convert to fraction form
    99,581,593.80/149,372,390.70 = 67,057,404.60/x
  3. Step 3: Cross multiply
    99,581,593.80x = 149,372,390.70 × 67,057,404.60
  4. Step 4: Simplify right side
    99,581,593.80x = 10,016,524,839,239,176
  5. Step 5: Solve for x
    x = 10,016,524,839,239,176/99,581,593.80
  6. Step 6: Final answer
    x = 100,586,106.90

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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.