Home / 231,114.16-318,933.66-129,141.28

Finding the Fourth Proportional to 231,114.16, 318,933.66 and 129,141.28

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Solution

The fourth proportional to 231,114.16, 318,933.66 and 129,141.28 is: 178,212.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,114.16 : 318,933.66 = 129,141.28 : x
  2. Step 2: Convert to fraction form
    231,114.16/318,933.66 = 129,141.28/x
  3. Step 3: Cross multiply
    231,114.16x = 318,933.66 × 129,141.28
  4. Step 4: Simplify right side
    231,114.16x = 41,187,501,087.48
  5. Step 5: Solve for x
    x = 41,187,501,087.48/231,114.16
  6. Step 6: Final answer
    x = 178,212.80

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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.