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Finding the Third Proportional to 81,938.25 and 123,657.75

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Solution

The third proportional to 81,938.25 and 123,657.75 is: 186,619.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,938.25 : 123,657.75 = 123,657.75 : x
  2. Step 2: Convert to fraction form
    81,938.25/123,657.75 = 123,657.75/x
  3. Step 3: Cross multiply
    81,938.25x = 123,657.75 × 123,657.75
  4. Step 4: Simplify right side
    81,938.25x = 15,291,239,135.06
  5. Step 5: Solve for x
    x = 15,291,239,135.06/81,938.25
  6. Step 6: Final answer
    x = 186,619.06

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.