Home / 231,987.91-320,138.04-135,185.71

Finding the Fourth Proportional to 231,987.91, 320,138.04 and 135,185.71

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Solution

The fourth proportional to 231,987.91, 320,138.04 and 135,185.71 is: 186,553.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,987.91 : 320,138.04 = 135,185.71 : x
  2. Step 2: Convert to fraction form
    231,987.91/320,138.04 = 135,185.71/x
  3. Step 3: Cross multiply
    231,987.91x = 320,138.04 × 135,185.71
  4. Step 4: Simplify right side
    231,987.91x = 43,278,088,235.41
  5. Step 5: Solve for x
    x = 43,278,088,235.41/231,987.91
  6. Step 6: Final answer
    x = 186,553.21

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.