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Finding the Third Proportional to 77,365.13 and 161,838

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Solution

The third proportional to 77,365.13 and 161,838 is: 338,544.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,365.13 : 161,838 = 161,838 : x
  2. Step 2: Convert to fraction form
    77,365.13/161,838 = 161,838/x
  3. Step 3: Cross multiply
    77,365.13x = 161,838 × 161,838
  4. Step 4: Simplify right side
    77,365.13x = 26,191,538,244
  5. Step 5: Solve for x
    x = 26,191,538,244/77,365.13
  6. Step 6: Final answer
    x = 338,544.51

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Why These Related Problems?

These problems maintain the same ratio (2.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.