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Finding the Third Proportional to 76,617 and 115,668

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Solution

The third proportional to 76,617 and 115,668 is: 174,622.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,617 : 115,668 = 115,668 : x
  2. Step 2: Convert to fraction form
    76,617/115,668 = 115,668/x
  3. Step 3: Cross multiply
    76,617x = 115,668 × 115,668
  4. Step 4: Simplify right side
    76,617x = 13,379,086,224
  5. Step 5: Solve for x
    x = 13,379,086,224/76,617
  6. Step 6: Final answer
    x = 174,622.95

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.