Home / 231,165.12-319,003.68-129,192.48

Finding the Fourth Proportional to 231,165.12, 319,003.68 and 129,192.48

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Solution

The fourth proportional to 231,165.12, 319,003.68 and 129,192.48 is: 178,283.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,165.12 : 319,003.68 = 129,192.48 : x
  2. Step 2: Convert to fraction form
    231,165.12/319,003.68 = 129,192.48/x
  3. Step 3: Cross multiply
    231,165.12x = 319,003.68 × 129,192.48
  4. Step 4: Simplify right side
    231,165.12x = 41,212,876,548.33
  5. Step 5: Solve for x
    x = 41,212,876,548.33/231,165.12
  6. Step 6: Final answer
    x = 178,283.28

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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.