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Finding the Third Proportional to 77,768.50 and 160,721

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Solution

The third proportional to 77,768.50 and 160,721 is: 332,155.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,768.50 : 160,721 = 160,721 : x
  2. Step 2: Convert to fraction form
    77,768.50/160,721 = 160,721/x
  3. Step 3: Cross multiply
    77,768.50x = 160,721 × 160,721
  4. Step 4: Simplify right side
    77,768.50x = 25,831,239,841
  5. Step 5: Solve for x
    x = 25,831,239,841/77,768.50
  6. Step 6: Final answer
    x = 332,155.56

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Why These Related Problems?

These problems maintain the same ratio (2.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.