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Finding the Third Proportional to 79,008.75 and 172,219.50

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Solution

The third proportional to 79,008.75 and 172,219.50 is: 375,395.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,008.75 : 172,219.50 = 172,219.50 : x
  2. Step 2: Convert to fraction form
    79,008.75/172,219.50 = 172,219.50/x
  3. Step 3: Cross multiply
    79,008.75x = 172,219.50 × 172,219.50
  4. Step 4: Simplify right side
    79,008.75x = 29,659,556,180.25
  5. Step 5: Solve for x
    x = 29,659,556,180.25/79,008.75
  6. Step 6: Final answer
    x = 375,395.84

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Why These Related Problems?

These problems maintain the same ratio (2.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.