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Finding the Third Proportional to 79,278.75 and 171,301.50

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Solution

The third proportional to 79,278.75 and 171,301.50 is: 370,139.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,278.75 : 171,301.50 = 171,301.50 : x
  2. Step 2: Convert to fraction form
    79,278.75/171,301.50 = 171,301.50/x
  3. Step 3: Cross multiply
    79,278.75x = 171,301.50 × 171,301.50
  4. Step 4: Simplify right side
    79,278.75x = 29,344,203,902.25
  5. Step 5: Solve for x
    x = 29,344,203,902.25/79,278.75
  6. Step 6: Final answer
    x = 370,139.59

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Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.