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Finding the Fourth Proportional to 133,093.44, 199,638.72 and 126,449.28

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Solution

The fourth proportional to 133,093.44, 199,638.72 and 126,449.28 is: 189,672.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,093.44 : 199,638.72 = 126,449.28 : x
  2. Step 2: Convert to fraction form
    133,093.44/199,638.72 = 126,449.28/x
  3. Step 3: Cross multiply
    133,093.44x = 199,638.72 × 126,449.28
  4. Step 4: Simplify right side
    133,093.44x = 25,244,172,404.12
  5. Step 5: Solve for x
    x = 25,244,172,404.12/133,093.44
  6. Step 6: Final answer
    x = 189,672.55

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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.