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Finding the Third Proportional to 72,876 and 156,929

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Solution

The third proportional to 72,876 and 156,929 is: 337,926.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,876 : 156,929 = 156,929 : x
  2. Step 2: Convert to fraction form
    72,876/156,929 = 156,929/x
  3. Step 3: Cross multiply
    72,876x = 156,929 × 156,929
  4. Step 4: Simplify right side
    72,876x = 24,626,711,041
  5. Step 5: Solve for x
    x = 24,626,711,041/72,876
  6. Step 6: Final answer
    x = 337,926.22

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.