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Finding the Third Proportional to 129,512 and 196,956

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Solution

The third proportional to 129,512 and 196,956 is: 299,521.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,512 : 196,956 = 196,956 : x
  2. Step 2: Convert to fraction form
    129,512/196,956 = 196,956/x
  3. Step 3: Cross multiply
    129,512x = 196,956 × 196,956
  4. Step 4: Simplify right side
    129,512x = 38,791,665,936
  5. Step 5: Solve for x
    x = 38,791,665,936/129,512
  6. Step 6: Final answer
    x = 299,521.79

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.