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Finding the Third Proportional to 76,850 and 115,275

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Solution

The third proportional to 76,850 and 115,275 is: 172,912.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,850 : 115,275 = 115,275 : x
  2. Step 2: Convert to fraction form
    76,850/115,275 = 115,275/x
  3. Step 3: Cross multiply
    76,850x = 115,275 × 115,275
  4. Step 4: Simplify right side
    76,850x = 13,288,325,625
  5. Step 5: Solve for x
    x = 13,288,325,625/76,850
  6. Step 6: Final answer
    x = 172,912.50

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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.