Home / 231,006.42-318,785.40-129,033.54

Finding the Fourth Proportional to 231,006.42, 318,785.40 and 129,033.54

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Solution

The fourth proportional to 231,006.42, 318,785.40 and 129,033.54 is: 178,064.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,006.42 : 318,785.40 = 129,033.54 : x
  2. Step 2: Convert to fraction form
    231,006.42/318,785.40 = 129,033.54/x
  3. Step 3: Cross multiply
    231,006.42x = 318,785.40 × 129,033.54
  4. Step 4: Simplify right side
    231,006.42x = 41,134,008,662.32
  5. Step 5: Solve for x
    x = 41,134,008,662.32/231,006.42
  6. Step 6: Final answer
    x = 178,064.35

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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.