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Finding the Third Proportional to 84,145 and 178,676

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Solution

The third proportional to 84,145 and 178,676 is: 379,405.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,145 : 178,676 = 178,676 : x
  2. Step 2: Convert to fraction form
    84,145/178,676 = 178,676/x
  3. Step 3: Cross multiply
    84,145x = 178,676 × 178,676
  4. Step 4: Simplify right side
    84,145x = 31,925,112,976
  5. Step 5: Solve for x
    x = 31,925,112,976/84,145
  6. Step 6: Final answer
    x = 379,405.94

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.