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Finding the Third Proportional to 109,215 and 164,825

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Solution

The third proportional to 109,215 and 164,825 is: 248,750.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,215 : 164,825 = 164,825 : x
  2. Step 2: Convert to fraction form
    109,215/164,825 = 164,825/x
  3. Step 3: Cross multiply
    109,215x = 164,825 × 164,825
  4. Step 4: Simplify right side
    109,215x = 27,167,280,625
  5. Step 5: Solve for x
    x = 27,167,280,625/109,215
  6. Step 6: Final answer
    x = 248,750.45

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.