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Finding the Third Proportional to 77,728.50 and 161,298

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Solution

The third proportional to 77,728.50 and 161,298 is: 334,716.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,728.50 : 161,298 = 161,298 : x
  2. Step 2: Convert to fraction form
    77,728.50/161,298 = 161,298/x
  3. Step 3: Cross multiply
    77,728.50x = 161,298 × 161,298
  4. Step 4: Simplify right side
    77,728.50x = 26,017,044,804
  5. Step 5: Solve for x
    x = 26,017,044,804/77,728.50
  6. Step 6: Final answer
    x = 334,716.93

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Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.