Home / 231,589.80-319,599.66-129,614.40

Finding the Fourth Proportional to 231,589.80, 319,599.66 and 129,614.40

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Solution

The fourth proportional to 231,589.80, 319,599.66 and 129,614.40 is: 178,871.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,589.80 : 319,599.66 = 129,614.40 : x
  2. Step 2: Convert to fraction form
    231,589.80/319,599.66 = 129,614.40/x
  3. Step 3: Cross multiply
    231,589.80x = 319,599.66 × 129,614.40
  4. Step 4: Simplify right side
    231,589.80x = 41,424,718,171.10
  5. Step 5: Solve for x
    x = 41,424,718,171.10/231,589.80
  6. Step 6: Final answer
    x = 178,871.08

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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.