Home / 108,039.20-162,204.60-85,877.60

Finding the Fourth Proportional to 108,039.20, 162,204.60 and 85,877.60

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Solution

The fourth proportional to 108,039.20, 162,204.60 and 85,877.60 is: 128,932.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,039.20 : 162,204.60 = 85,877.60 : x
  2. Step 2: Convert to fraction form
    108,039.20/162,204.60 = 85,877.60/x
  3. Step 3: Cross multiply
    108,039.20x = 162,204.60 × 85,877.60
  4. Step 4: Simplify right side
    108,039.20x = 13,929,741,756.96
  5. Step 5: Solve for x
    x = 13,929,741,756.96/108,039.20
  6. Step 6: Final answer
    x = 128,932.29

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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.