Home / 231,134.99-318,960.14-129,161.28

Finding the Fourth Proportional to 231,134.99, 318,960.14 and 129,161.28

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Solution

The fourth proportional to 231,134.99, 318,960.14 and 129,161.28 is: 178,239.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,134.99 : 318,960.14 = 129,161.28 : x
  2. Step 2: Convert to fraction form
    231,134.99/318,960.14 = 129,161.28/x
  3. Step 3: Cross multiply
    231,134.99x = 318,960.14 × 129,161.28
  4. Step 4: Simplify right side
    231,134.99x = 41,197,299,305.57
  5. Step 5: Solve for x
    x = 41,197,299,305.57/231,134.99
  6. Step 6: Final answer
    x = 178,239.13

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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.