Home / 168,090.38-231,961.30-92,638.88

Finding the Fourth Proportional to 168,090.38, 231,961.30 and 92,638.88

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Solution

The fourth proportional to 168,090.38, 231,961.30 and 92,638.88 is: 127,839.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,090.38 : 231,961.30 = 92,638.88 : x
  2. Step 2: Convert to fraction form
    168,090.38/231,961.30 = 92,638.88/x
  3. Step 3: Cross multiply
    168,090.38x = 231,961.30 × 92,638.88
  4. Step 4: Simplify right side
    168,090.38x = 21,488,635,035.34
  5. Step 5: Solve for x
    x = 21,488,635,035.34/168,090.38
  6. Step 6: Final answer
    x = 127,839.77

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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.