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Finding the Third Proportional to 66,920 and 100,389

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Solution

The third proportional to 66,920 and 100,389 is: 150,597.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,920 : 100,389 = 100,389 : x
  2. Step 2: Convert to fraction form
    66,920/100,389 = 100,389/x
  3. Step 3: Cross multiply
    66,920x = 100,389 × 100,389
  4. Step 4: Simplify right side
    66,920x = 10,077,951,321
  5. Step 5: Solve for x
    x = 10,077,951,321/66,920
  6. Step 6: Final answer
    x = 150,597.00

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.