Home / 108,685.92-162,788-83,540.80

Finding the Fourth Proportional to 108,685.92, 162,788 and 83,540.80

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Solution

The fourth proportional to 108,685.92, 162,788 and 83,540.80 is: 125,126.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,685.92 : 162,788 = 83,540.80 : x
  2. Step 2: Convert to fraction form
    108,685.92/162,788 = 83,540.80/x
  3. Step 3: Cross multiply
    108,685.92x = 162,788 × 83,540.80
  4. Step 4: Simplify right side
    108,685.92x = 13,599,439,750.40
  5. Step 5: Solve for x
    x = 13,599,439,750.40/108,685.92
  6. Step 6: Final answer
    x = 125,126.05

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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.