Home / 168,058.61-231,921.75-91,578.55

Finding the Fourth Proportional to 168,058.61, 231,921.75 and 91,578.55

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Solution

The fourth proportional to 168,058.61, 231,921.75 and 91,578.55 is: 126,378.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,058.61 : 231,921.75 = 91,578.55 : x
  2. Step 2: Convert to fraction form
    168,058.61/231,921.75 = 91,578.55/x
  3. Step 3: Cross multiply
    168,058.61x = 231,921.75 × 91,578.55
  4. Step 4: Simplify right side
    168,058.61x = 21,239,057,578.46
  5. Step 5: Solve for x
    x = 21,239,057,578.46/168,058.61
  6. Step 6: Final answer
    x = 126,378.87

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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.