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Finding the Third Proportional to 51,221 and 111,703

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Solution

The third proportional to 51,221 and 111,703 is: 243,602.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,221 : 111,703 = 111,703 : x
  2. Step 2: Convert to fraction form
    51,221/111,703 = 111,703/x
  3. Step 3: Cross multiply
    51,221x = 111,703 × 111,703
  4. Step 4: Simplify right side
    51,221x = 12,477,560,209
  5. Step 5: Solve for x
    x = 12,477,560,209/51,221
  6. Step 6: Final answer
    x = 243,602.43

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.