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Finding the Third Proportional to 83,138 and 177,972

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Solution

The third proportional to 83,138 and 177,972 is: 380,981.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,138 : 177,972 = 177,972 : x
  2. Step 2: Convert to fraction form
    83,138/177,972 = 177,972/x
  3. Step 3: Cross multiply
    83,138x = 177,972 × 177,972
  4. Step 4: Simplify right side
    83,138x = 31,674,032,784
  5. Step 5: Solve for x
    x = 31,674,032,784/83,138
  6. Step 6: Final answer
    x = 380,981.41

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.