Home / 198,587.28-297,713.61-86,182.86

Finding the Fourth Proportional to 198,587.28, 297,713.61 and 86,182.86

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Solution

The fourth proportional to 198,587.28, 297,713.61 and 86,182.86 is: 129,201.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,587.28 : 297,713.61 = 86,182.86 : x
  2. Step 2: Convert to fraction form
    198,587.28/297,713.61 = 86,182.86/x
  3. Step 3: Cross multiply
    198,587.28x = 297,713.61 × 86,182.86
  4. Step 4: Simplify right side
    198,587.28x = 25,657,810,370.72
  5. Step 5: Solve for x
    x = 25,657,810,370.72/198,587.28
  6. Step 6: Final answer
    x = 129,201.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.