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Finding the Fourth Proportional to 133.68, 201.60 and 117.84

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Solution

The fourth proportional to 133.68, 201.60 and 117.84 is: 177.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    133.68 : 201.60 = 117.84 : x
  2. Step 2: Convert to fraction form
    133.68/201.60 = 117.84/x
  3. Step 3: Cross multiply
    133.68x = 201.60 × 117.84
  4. Step 4: Simplify right side
    133.68x = 23,756.54
  5. Step 5: Solve for x
    x = 23,756.54/133.68
  6. Step 6: Final answer
    x = 177.71

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.