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Finding the Third Proportional to 79,278 and 115,353

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Solution

The third proportional to 79,278 and 115,353 is: 167,843.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,278 : 115,353 = 115,353 : x
  2. Step 2: Convert to fraction form
    79,278/115,353 = 115,353/x
  3. Step 3: Cross multiply
    79,278x = 115,353 × 115,353
  4. Step 4: Simplify right side
    79,278x = 13,306,314,609
  5. Step 5: Solve for x
    x = 13,306,314,609/79,278
  6. Step 6: Final answer
    x = 167,843.72

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.