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Finding the Third Proportional to 76,823 and 115,236.50

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Solution

The third proportional to 76,823 and 115,236.50 is: 172,857.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,823 : 115,236.50 = 115,236.50 : x
  2. Step 2: Convert to fraction form
    76,823/115,236.50 = 115,236.50/x
  3. Step 3: Cross multiply
    76,823x = 115,236.50 × 115,236.50
  4. Step 4: Simplify right side
    76,823x = 13,279,450,932.25
  5. Step 5: Solve for x
    x = 13,279,450,932.25/76,823
  6. Step 6: Final answer
    x = 172,857.75

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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.