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Finding the Fourth Proportional to 137.84, 189.12 and 134.38

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Solution

The fourth proportional to 137.84, 189.12 and 134.38 is: 184.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    137.84 : 189.12 = 134.38 : x
  2. Step 2: Convert to fraction form
    137.84/189.12 = 134.38/x
  3. Step 3: Cross multiply
    137.84x = 189.12 × 134.38
  4. Step 4: Simplify right side
    137.84x = 25,413.95
  5. Step 5: Solve for x
    x = 25,413.95/137.84
  6. Step 6: Final answer
    x = 184.37

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.