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Finding the Third Proportional to 77,809.50 and 158,469

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Solution

The third proportional to 77,809.50 and 158,469 is: 322,742.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,809.50 : 158,469 = 158,469 : x
  2. Step 2: Convert to fraction form
    77,809.50/158,469 = 158,469/x
  3. Step 3: Cross multiply
    77,809.50x = 158,469 × 158,469
  4. Step 4: Simplify right side
    77,809.50x = 25,112,423,961
  5. Step 5: Solve for x
    x = 25,112,423,961/77,809.50
  6. Step 6: Final answer
    x = 322,742.39

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Why These Related Problems?

These problems maintain the same ratio (2.04) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.