Home / 231,182.15-319,004.46-129,207.81

Finding the Fourth Proportional to 231,182.15, 319,004.46 and 129,207.81

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Solution

The fourth proportional to 231,182.15, 319,004.46 and 129,207.81 is: 178,291.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,182.15 : 319,004.46 = 129,207.81 : x
  2. Step 2: Convert to fraction form
    231,182.15/319,004.46 = 129,207.81/x
  3. Step 3: Cross multiply
    231,182.15x = 319,004.46 × 129,207.81
  4. Step 4: Simplify right side
    231,182.15x = 41,217,867,656.83
  5. Step 5: Solve for x
    x = 41,217,867,656.83/231,182.15
  6. Step 6: Final answer
    x = 178,291.74

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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.