Home / 108,170.17-149,177.86-90,080.78

Finding the Fourth Proportional to 108,170.17, 149,177.86 and 90,080.78

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Solution

The fourth proportional to 108,170.17, 149,177.86 and 90,080.78 is: 124,230.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,170.17 : 149,177.86 = 90,080.78 : x
  2. Step 2: Convert to fraction form
    108,170.17/149,177.86 = 90,080.78/x
  3. Step 3: Cross multiply
    108,170.17x = 149,177.86 × 90,080.78
  4. Step 4: Simplify right side
    108,170.17x = 13,438,057,016.44
  5. Step 5: Solve for x
    x = 13,438,057,016.44/108,170.17
  6. Step 6: Final answer
    x = 124,230.71

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.