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Finding the Third Proportional to 76,976 and 115,464

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Solution

The third proportional to 76,976 and 115,464 is: 173,196

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,976 : 115,464 = 115,464 : x
  2. Step 2: Convert to fraction form
    76,976/115,464 = 115,464/x
  3. Step 3: Cross multiply
    76,976x = 115,464 × 115,464
  4. Step 4: Simplify right side
    76,976x = 13,331,935,296
  5. Step 5: Solve for x
    x = 13,331,935,296/76,976
  6. Step 6: Final answer
    x = 173,196

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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.