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Finding the Fourth Proportional to 109.56, 163.92 and 63.93

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Solution

The fourth proportional to 109.56, 163.92 and 63.93 is: 95.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    109.56 : 163.92 = 63.93 : x
  2. Step 2: Convert to fraction form
    109.56/163.92 = 63.93/x
  3. Step 3: Cross multiply
    109.56x = 163.92 × 63.93
  4. Step 4: Simplify right side
    109.56x = 10,479.41
  5. Step 5: Solve for x
    x = 10,479.41/109.56
  6. Step 6: Final answer
    x = 95.65

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.