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Finding the Fourth Proportional to 142.66, 196.95 and 134.74

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Solution

The fourth proportional to 142.66, 196.95 and 134.74 is: 186.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    142.66 : 196.95 = 134.74 : x
  2. Step 2: Convert to fraction form
    142.66/196.95 = 134.74/x
  3. Step 3: Cross multiply
    142.66x = 196.95 × 134.74
  4. Step 4: Simplify right side
    142.66x = 26,537.04
  5. Step 5: Solve for x
    x = 26,537.04/142.66
  6. Step 6: Final answer
    x = 186.02

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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.