Home / 231,789.65-319,919.14-136,350.79

Finding the Fourth Proportional to 231,789.65, 319,919.14 and 136,350.79

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Solution

The fourth proportional to 231,789.65, 319,919.14 and 136,350.79 is: 188,193.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,789.65 : 319,919.14 = 136,350.79 : x
  2. Step 2: Convert to fraction form
    231,789.65/319,919.14 = 136,350.79/x
  3. Step 3: Cross multiply
    231,789.65x = 319,919.14 × 136,350.79
  4. Step 4: Simplify right side
    231,789.65x = 43,621,229,028.79
  5. Step 5: Solve for x
    x = 43,621,229,028.79/231,789.65
  6. Step 6: Final answer
    x = 188,193.17

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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.