Home / 213,315.41-319,961.57-108,131.64

Finding the Fourth Proportional to 213,315.41, 319,961.57 and 108,131.64

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Solution

The fourth proportional to 213,315.41, 319,961.57 and 108,131.64 is: 162,191.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,315.41 : 319,961.57 = 108,131.64 : x
  2. Step 2: Convert to fraction form
    213,315.41/319,961.57 = 108,131.64/x
  3. Step 3: Cross multiply
    213,315.41x = 319,961.57 × 108,131.64
  4. Step 4: Simplify right side
    213,315.41x = 34,597,968,760.42
  5. Step 5: Solve for x
    x = 34,597,968,760.42/213,315.41
  6. Step 6: Final answer
    x = 162,191.61

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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.