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Finding the Fourth Proportional to 182,115.12, 251,322 and 100,452.78

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Solution

The fourth proportional to 182,115.12, 251,322 and 100,452.78 is: 138,626.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    182,115.12 : 251,322 = 100,452.78 : x
  2. Step 2: Convert to fraction form
    182,115.12/251,322 = 100,452.78/x
  3. Step 3: Cross multiply
    182,115.12x = 251,322 × 100,452.78
  4. Step 4: Simplify right side
    182,115.12x = 25,245,993,575.16
  5. Step 5: Solve for x
    x = 25,245,993,575.16/182,115.12
  6. Step 6: Final answer
    x = 138,626.57

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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.