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Finding the Fourth Proportional to 108,132.90, 149,177.04 and 67,819.20

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Solution

The fourth proportional to 108,132.90, 149,177.04 and 67,819.20 is: 93,561.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,132.90 : 149,177.04 = 67,819.20 : x
  2. Step 2: Convert to fraction form
    108,132.90/149,177.04 = 67,819.20/x
  3. Step 3: Cross multiply
    108,132.90x = 149,177.04 × 67,819.20
  4. Step 4: Simplify right side
    108,132.90x = 10,117,067,511.17
  5. Step 5: Solve for x
    x = 10,117,067,511.17/108,132.90
  6. Step 6: Final answer
    x = 93,561.42

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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.