Home / 231,515.27-319,496.81-129,539.90

Finding the Fourth Proportional to 231,515.27, 319,496.81 and 129,539.90

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Solution

The fourth proportional to 231,515.27, 319,496.81 and 129,539.90 is: 178,768.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,515.27 : 319,496.81 = 129,539.90 : x
  2. Step 2: Convert to fraction form
    231,515.27/319,496.81 = 129,539.90/x
  3. Step 3: Cross multiply
    231,515.27x = 319,496.81 × 129,539.90
  4. Step 4: Simplify right side
    231,515.27x = 41,387,582,572.54
  5. Step 5: Solve for x
    x = 41,387,582,572.54/231,515.27
  6. Step 6: Final answer
    x = 178,768.27

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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.