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Finding the Third Proportional to 91,213 and 195,912

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Solution

The third proportional to 91,213 and 195,912 is: 420,789.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,213 : 195,912 = 195,912 : x
  2. Step 2: Convert to fraction form
    91,213/195,912 = 195,912/x
  3. Step 3: Cross multiply
    91,213x = 195,912 × 195,912
  4. Step 4: Simplify right side
    91,213x = 38,381,511,744
  5. Step 5: Solve for x
    x = 38,381,511,744/91,213
  6. Step 6: Final answer
    x = 420,789.93

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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.