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Finding the Third Proportional to 45,612 and 100,215

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Solution

The third proportional to 45,612 and 100,215 is: 220,184.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,612 : 100,215 = 100,215 : x
  2. Step 2: Convert to fraction form
    45,612/100,215 = 100,215/x
  3. Step 3: Cross multiply
    45,612x = 100,215 × 100,215
  4. Step 4: Simplify right side
    45,612x = 10,043,046,225
  5. Step 5: Solve for x
    x = 10,043,046,225/45,612
  6. Step 6: Final answer
    x = 220,184.30

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.