Home / 231,180.15-319,001.70-129,205.81

Finding the Fourth Proportional to 231,180.15, 319,001.70 and 129,205.81

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Solution

The fourth proportional to 231,180.15, 319,001.70 and 129,205.81 is: 178,288.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,180.15 : 319,001.70 = 129,205.81 : x
  2. Step 2: Convert to fraction form
    231,180.15/319,001.70 = 129,205.81/x
  3. Step 3: Cross multiply
    231,180.15x = 319,001.70 × 129,205.81
  4. Step 4: Simplify right side
    231,180.15x = 41,216,873,039.88
  5. Step 5: Solve for x
    x = 41,216,873,039.88/231,180.15
  6. Step 6: Final answer
    x = 178,288.98

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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.