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Finding the Fourth Proportional to 108,706.68, 150,016.77 and 65,680.20

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Solution

The fourth proportional to 108,706.68, 150,016.77 and 65,680.20 is: 90,639.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,706.68 : 150,016.77 = 65,680.20 : x
  2. Step 2: Convert to fraction form
    108,706.68/150,016.77 = 65,680.20/x
  3. Step 3: Cross multiply
    108,706.68x = 150,016.77 × 65,680.20
  4. Step 4: Simplify right side
    108,706.68x = 9,853,131,456.95
  5. Step 5: Solve for x
    x = 9,853,131,456.95/108,706.68
  6. Step 6: Final answer
    x = 90,639.61

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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.