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Finding the Fourth Proportional to 99,694,082.80, 149,289,181.80 and 79,538,690.80

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Solution

The fourth proportional to 99,694,082.80, 149,289,181.80 and 79,538,690.80 is: 119,107,029.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,694,082.80 : 149,289,181.80 = 79,538,690.80 : x
  2. Step 2: Convert to fraction form
    99,694,082.80/149,289,181.80 = 79,538,690.80/x
  3. Step 3: Cross multiply
    99,694,082.80x = 149,289,181.80 × 79,538,690.80
  4. Step 4: Simplify right side
    99,694,082.80x = 11,874,266,070,975,188
  5. Step 5: Solve for x
    x = 11,874,266,070,975,188/99,694,082.80
  6. Step 6: Final answer
    x = 119,107,029.60

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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.