Home / 115,005.12-172,512.56-40,132.80

Finding the Fourth Proportional to 115,005.12, 172,512.56 and 40,132.80

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Solution

The fourth proportional to 115,005.12, 172,512.56 and 40,132.80 is: 60,200.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,005.12 : 172,512.56 = 40,132.80 : x
  2. Step 2: Convert to fraction form
    115,005.12/172,512.56 = 40,132.80/x
  3. Step 3: Cross multiply
    115,005.12x = 172,512.56 × 40,132.80
  4. Step 4: Simplify right side
    115,005.12x = 6,923,412,067.97
  5. Step 5: Solve for x
    x = 6,923,412,067.97/115,005.12
  6. Step 6: Final answer
    x = 60,200.90

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