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Finding the Third Proportional to 100,928 and 156,722

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Solution

The third proportional to 100,928 and 156,722 is: 243,359.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,928 : 156,722 = 156,722 : x
  2. Step 2: Convert to fraction form
    100,928/156,722 = 156,722/x
  3. Step 3: Cross multiply
    100,928x = 156,722 × 156,722
  4. Step 4: Simplify right side
    100,928x = 24,561,785,284
  5. Step 5: Solve for x
    x = 24,561,785,284/100,928
  6. Step 6: Final answer
    x = 243,359.48

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.