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Finding the Third Proportional to 81,904.50 and 178,962.75

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Solution

The third proportional to 81,904.50 and 178,962.75 is: 391,036.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,904.50 : 178,962.75 = 178,962.75 : x
  2. Step 2: Convert to fraction form
    81,904.50/178,962.75 = 178,962.75/x
  3. Step 3: Cross multiply
    81,904.50x = 178,962.75 × 178,962.75
  4. Step 4: Simplify right side
    81,904.50x = 32,027,665,887.56
  5. Step 5: Solve for x
    x = 32,027,665,887.56/81,904.50
  6. Step 6: Final answer
    x = 391,036.71

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.