Home / 132,387.40-198,350.70-85,616.20

Finding the Fourth Proportional to 132,387.40, 198,350.70 and 85,616.20

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Solution

The fourth proportional to 132,387.40, 198,350.70 and 85,616.20 is: 128,275.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,387.40 : 198,350.70 = 85,616.20 : x
  2. Step 2: Convert to fraction form
    132,387.40/198,350.70 = 85,616.20/x
  3. Step 3: Cross multiply
    132,387.40x = 198,350.70 × 85,616.20
  4. Step 4: Simplify right side
    132,387.40x = 16,982,033,201.34
  5. Step 5: Solve for x
    x = 16,982,033,201.34/132,387.40
  6. Step 6: Final answer
    x = 128,275.30

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1.5x scale

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.