Home / 231,786.79-319,829.23-135,006.57

Finding the Fourth Proportional to 231,786.79, 319,829.23 and 135,006.57

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Solution

The fourth proportional to 231,786.79, 319,829.23 and 135,006.57 is: 186,287.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,786.79 : 319,829.23 = 135,006.57 : x
  2. Step 2: Convert to fraction form
    231,786.79/319,829.23 = 135,006.57/x
  3. Step 3: Cross multiply
    231,786.79x = 319,829.23 × 135,006.57
  4. Step 4: Simplify right side
    231,786.79x = 43,179,048,776.03
  5. Step 5: Solve for x
    x = 43,179,048,776.03/231,786.79
  6. Step 6: Final answer
    x = 186,287.79

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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.