Home / 231,786.56-319,839-129,797.84

Finding the Fourth Proportional to 231,786.56, 319,839 and 129,797.84

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Solution

The fourth proportional to 231,786.56, 319,839 and 129,797.84 is: 179,106.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,786.56 : 319,839 = 129,797.84 : x
  2. Step 2: Convert to fraction form
    231,786.56/319,839 = 129,797.84/x
  3. Step 3: Cross multiply
    231,786.56x = 319,839 × 129,797.84
  4. Step 4: Simplify right side
    231,786.56x = 41,514,411,347.76
  5. Step 5: Solve for x
    x = 41,514,411,347.76/231,786.56
  6. Step 6: Final answer
    x = 179,106.21

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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.