Home / 231,696.76-319,771.38-129,760.96

Finding the Fourth Proportional to 231,696.76, 319,771.38 and 129,760.96

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Solution

The fourth proportional to 231,696.76, 319,771.38 and 129,760.96 is: 179,086.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,696.76 : 319,771.38 = 129,760.96 : x
  2. Step 2: Convert to fraction form
    231,696.76/319,771.38 = 129,760.96/x
  3. Step 3: Cross multiply
    231,696.76x = 319,771.38 × 129,760.96
  4. Step 4: Simplify right side
    231,696.76x = 41,493,841,249.32
  5. Step 5: Solve for x
    x = 41,493,841,249.32/231,696.76
  6. Step 6: Final answer
    x = 179,086.84

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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.