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Finding the Third Proportional to 78,660 and 117,999

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Solution

The third proportional to 78,660 and 117,999 is: 177,012.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,660 : 117,999 = 117,999 : x
  2. Step 2: Convert to fraction form
    78,660/117,999 = 117,999/x
  3. Step 3: Cross multiply
    78,660x = 117,999 × 117,999
  4. Step 4: Simplify right side
    78,660x = 13,923,764,001
  5. Step 5: Solve for x
    x = 13,923,764,001/78,660
  6. Step 6: Final answer
    x = 177,012.00

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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.