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Finding the Third Proportional to 76,818 and 115,227

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Solution

The third proportional to 76,818 and 115,227 is: 172,840.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,818 : 115,227 = 115,227 : x
  2. Step 2: Convert to fraction form
    76,818/115,227 = 115,227/x
  3. Step 3: Cross multiply
    76,818x = 115,227 × 115,227
  4. Step 4: Simplify right side
    76,818x = 13,277,261,529
  5. Step 5: Solve for x
    x = 13,277,261,529/76,818
  6. Step 6: Final answer
    x = 172,840.50

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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.