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Finding the Fourth Proportional to 99,694,086.80, 149,289,187.80 and 79,538,694.80

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Solution

The fourth proportional to 99,694,086.80, 149,289,187.80 and 79,538,694.80 is: 119,107,035.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,694,086.80 : 149,289,187.80 = 79,538,694.80 : x
  2. Step 2: Convert to fraction form
    99,694,086.80/149,289,187.80 = 79,538,694.80/x
  3. Step 3: Cross multiply
    99,694,086.80x = 149,289,187.80 × 79,538,694.80
  4. Step 4: Simplify right side
    99,694,086.80x = 11,874,267,145,364,084
  5. Step 5: Solve for x
    x = 11,874,267,145,364,084/99,694,086.80
  6. Step 6: Final answer
    x = 119,107,035.60

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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.