Home / 213,177.75-319,578.56-86,923.61

Finding the Fourth Proportional to 213,177.75, 319,578.56 and 86,923.61

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Solution

The fourth proportional to 213,177.75, 319,578.56 and 86,923.61 is: 130,308.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,177.75 : 319,578.56 = 86,923.61 : x
  2. Step 2: Convert to fraction form
    213,177.75/319,578.56 = 86,923.61/x
  3. Step 3: Cross multiply
    213,177.75x = 319,578.56 × 86,923.61
  4. Step 4: Simplify right side
    213,177.75x = 27,778,921,195.80
  5. Step 5: Solve for x
    x = 27,778,921,195.80/213,177.75
  6. Step 6: Final answer
    x = 130,308.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.