Home / 172,987.35-259,516.05-73,147.38

Finding the Fourth Proportional to 172,987.35, 259,516.05 and 73,147.38

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Solution

The fourth proportional to 172,987.35, 259,516.05 and 73,147.38 is: 109,735.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,987.35 : 259,516.05 = 73,147.38 : x
  2. Step 2: Convert to fraction form
    172,987.35/259,516.05 = 73,147.38/x
  3. Step 3: Cross multiply
    172,987.35x = 259,516.05 × 73,147.38
  4. Step 4: Simplify right side
    172,987.35x = 18,982,918,851.15
  5. Step 5: Solve for x
    x = 18,982,918,851.15/172,987.35
  6. Step 6: Final answer
    x = 109,735.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.