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Finding the Fourth Proportional to 163,517.81, 225,661.28 and 91,897.67

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Solution

The fourth proportional to 163,517.81, 225,661.28 and 91,897.67 is: 126,822.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,517.81 : 225,661.28 = 91,897.67 : x
  2. Step 2: Convert to fraction form
    163,517.81/225,661.28 = 91,897.67/x
  3. Step 3: Cross multiply
    163,517.81x = 225,661.28 × 91,897.67
  4. Step 4: Simplify right side
    163,517.81x = 20,737,745,945.88
  5. Step 5: Solve for x
    x = 20,737,745,945.88/163,517.81
  6. Step 6: Final answer
    x = 126,822.56

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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.