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Finding the Third Proportional to 76,822 and 115,235

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Solution

The third proportional to 76,822 and 115,235 is: 172,855.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,822 : 115,235 = 115,235 : x
  2. Step 2: Convert to fraction form
    76,822/115,235 = 115,235/x
  3. Step 3: Cross multiply
    76,822x = 115,235 × 115,235
  4. Step 4: Simplify right side
    76,822x = 13,279,105,225
  5. Step 5: Solve for x
    x = 13,279,105,225/76,822
  6. Step 6: Final answer
    x = 172,855.50

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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.