Home / 231,988.11-320,138.26-135,185.80

Finding the Fourth Proportional to 231,988.11, 320,138.26 and 135,185.80

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Solution

The fourth proportional to 231,988.11, 320,138.26 and 135,185.80 is: 186,553.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,988.11 : 320,138.26 = 135,185.80 : x
  2. Step 2: Convert to fraction form
    231,988.11/320,138.26 = 135,185.80/x
  3. Step 3: Cross multiply
    231,988.11x = 320,138.26 × 135,185.80
  4. Step 4: Simplify right side
    231,988.11x = 43,278,146,788.71
  5. Step 5: Solve for x
    x = 43,278,146,788.71/231,988.11
  6. Step 6: Final answer
    x = 186,553.30

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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.