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Finding the Fourth Proportional to 99,882.56, 137,833.12 and 55,169.60

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Solution

The fourth proportional to 99,882.56, 137,833.12 and 55,169.60 is: 76,131.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,882.56 : 137,833.12 = 55,169.60 : x
  2. Step 2: Convert to fraction form
    99,882.56/137,833.12 = 55,169.60/x
  3. Step 3: Cross multiply
    99,882.56x = 137,833.12 × 55,169.60
  4. Step 4: Simplify right side
    99,882.56x = 7,604,198,097.15
  5. Step 5: Solve for x
    x = 7,604,198,097.15/99,882.56
  6. Step 6: Final answer
    x = 76,131.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.