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Finding the Third Proportional to 82,178 and 177,018

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Solution

The third proportional to 82,178 and 177,018 is: 381,310.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,178 : 177,018 = 177,018 : x
  2. Step 2: Convert to fraction form
    82,178/177,018 = 177,018/x
  3. Step 3: Cross multiply
    82,178x = 177,018 × 177,018
  4. Step 4: Simplify right side
    82,178x = 31,335,372,324
  5. Step 5: Solve for x
    x = 31,335,372,324/82,178
  6. Step 6: Final answer
    x = 381,310.96

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.