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Finding the Third Proportional to 76,389 and 167,844

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Solution

The third proportional to 76,389 and 167,844 is: 368,791.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,389 : 167,844 = 167,844 : x
  2. Step 2: Convert to fraction form
    76,389/167,844 = 167,844/x
  3. Step 3: Cross multiply
    76,389x = 167,844 × 167,844
  4. Step 4: Simplify right side
    76,389x = 28,171,608,336
  5. Step 5: Solve for x
    x = 28,171,608,336/76,389
  6. Step 6: Final answer
    x = 368,791.43

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.