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Finding the Fourth Proportional to 121.64, 167.83 and 88.83

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Solution

The fourth proportional to 121.64, 167.83 and 88.83 is: 122.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    121.64 : 167.83 = 88.83 : x
  2. Step 2: Convert to fraction form
    121.64/167.83 = 88.83/x
  3. Step 3: Cross multiply
    121.64x = 167.83 × 88.83
  4. Step 4: Simplify right side
    121.64x = 14,908.12
  5. Step 5: Solve for x
    x = 14,908.12/121.64
  6. Step 6: Final answer
    x = 122.56

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.