Home / 108,668.43-149,961.11-60,920.78

Finding the Fourth Proportional to 108,668.43, 149,961.11 and 60,920.78

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Solution

The fourth proportional to 108,668.43, 149,961.11 and 60,920.78 is: 84,069.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,668.43 : 149,961.11 = 60,920.78 : x
  2. Step 2: Convert to fraction form
    108,668.43/149,961.11 = 60,920.78/x
  3. Step 3: Cross multiply
    108,668.43x = 149,961.11 × 60,920.78
  4. Step 4: Simplify right side
    108,668.43x = 9,135,746,736.46
  5. Step 5: Solve for x
    x = 9,135,746,736.46/108,668.43
  6. Step 6: Final answer
    x = 84,069.92

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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.