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Finding the Fourth Proportional to 108,481.80, 149,700.48 and 63,161.10

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Solution

The fourth proportional to 108,481.80, 149,700.48 and 63,161.10 is: 87,159.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,481.80 : 149,700.48 = 63,161.10 : x
  2. Step 2: Convert to fraction form
    108,481.80/149,700.48 = 63,161.10/x
  3. Step 3: Cross multiply
    108,481.80x = 149,700.48 × 63,161.10
  4. Step 4: Simplify right side
    108,481.80x = 9,455,246,987.33
  5. Step 5: Solve for x
    x = 9,455,246,987.33/108,481.80
  6. Step 6: Final answer
    x = 87,159.75

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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.