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Finding the Fourth Proportional to 163,578.62, 225,731.91 and 91,957.11

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Solution

The fourth proportional to 163,578.62, 225,731.91 and 91,957.11 is: 126,897.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,578.62 : 225,731.91 = 91,957.11 : x
  2. Step 2: Convert to fraction form
    163,578.62/225,731.91 = 91,957.11/x
  3. Step 3: Cross multiply
    163,578.62x = 225,731.91 × 91,957.11
  4. Step 4: Simplify right side
    163,578.62x = 20,757,654,078.38
  5. Step 5: Solve for x
    x = 20,757,654,078.38/163,578.62
  6. Step 6: Final answer
    x = 126,897.11

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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.