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Finding the Fourth Proportional to 168,071.78, 231,933.11 and 94,481.96

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Solution

The fourth proportional to 168,071.78, 231,933.11 and 94,481.96 is: 130,381.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,071.78 : 231,933.11 = 94,481.96 : x
  2. Step 2: Convert to fraction form
    168,071.78/231,933.11 = 94,481.96/x
  3. Step 3: Cross multiply
    168,071.78x = 231,933.11 × 94,481.96
  4. Step 4: Simplify right side
    168,071.78x = 21,913,493,189.62
  5. Step 5: Solve for x
    x = 21,913,493,189.62/168,071.78
  6. Step 6: Final answer
    x = 130,381.75

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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.