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Finding the Third Proportional to 81,136 and 177,208

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Solution

The third proportional to 81,136 and 177,208 is: 387,037.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,136 : 177,208 = 177,208 : x
  2. Step 2: Convert to fraction form
    81,136/177,208 = 177,208/x
  3. Step 3: Cross multiply
    81,136x = 177,208 × 177,208
  4. Step 4: Simplify right side
    81,136x = 31,402,675,264
  5. Step 5: Solve for x
    x = 31,402,675,264/81,136
  6. Step 6: Final answer
    x = 387,037.51

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.