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Finding the Third Proportional to 76,672 and 166,640

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Solution

The third proportional to 76,672 and 166,640 is: 362,177.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,672 : 166,640 = 166,640 : x
  2. Step 2: Convert to fraction form
    76,672/166,640 = 166,640/x
  3. Step 3: Cross multiply
    76,672x = 166,640 × 166,640
  4. Step 4: Simplify right side
    76,672x = 27,768,889,600
  5. Step 5: Solve for x
    x = 27,768,889,600/76,672
  6. Step 6: Final answer
    x = 362,177.71

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.