Home / 108,519.20-162,778.80-66,528.80

Finding the Fourth Proportional to 108,519.20, 162,778.80 and 66,528.80

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Solution

The fourth proportional to 108,519.20, 162,778.80 and 66,528.80 is: 99,793.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,519.20 : 162,778.80 = 66,528.80 : x
  2. Step 2: Convert to fraction form
    108,519.20/162,778.80 = 66,528.80/x
  3. Step 3: Cross multiply
    108,519.20x = 162,778.80 × 66,528.80
  4. Step 4: Simplify right side
    108,519.20x = 10,829,478,229.44
  5. Step 5: Solve for x
    x = 10,829,478,229.44/108,519.20
  6. Step 6: Final answer
    x = 99,793.20

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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.