Home / 115,067.28-172,642.32-40,198.44

Finding the Fourth Proportional to 115,067.28, 172,642.32 and 40,198.44

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Solution

The fourth proportional to 115,067.28, 172,642.32 and 40,198.44 is: 60,312.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,067.28 : 172,642.32 = 40,198.44 : x
  2. Step 2: Convert to fraction form
    115,067.28/172,642.32 = 40,198.44/x
  3. Step 3: Cross multiply
    115,067.28x = 172,642.32 × 40,198.44
  4. Step 4: Simplify right side
    115,067.28x = 6,939,951,941.98
  5. Step 5: Solve for x
    x = 6,939,951,941.98/115,067.28
  6. Step 6: Final answer
    x = 60,312.12

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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.