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Finding the Fourth Proportional to 108,201.88, 149,080.98 and 80,863.48

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Solution

The fourth proportional to 108,201.88, 149,080.98 and 80,863.48 is: 111,414.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,201.88 : 149,080.98 = 80,863.48 : x
  2. Step 2: Convert to fraction form
    108,201.88/149,080.98 = 80,863.48/x
  3. Step 3: Cross multiply
    108,201.88x = 149,080.98 × 80,863.48
  4. Step 4: Simplify right side
    108,201.88x = 12,055,206,844.61
  5. Step 5: Solve for x
    x = 12,055,206,844.61/108,201.88
  6. Step 6: Final answer
    x = 111,414.02

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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.