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Finding the Fourth Proportional to 93.14, 138.76 and 88.55

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Solution

The fourth proportional to 93.14, 138.76 and 88.55 is: 131.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    93.14 : 138.76 = 88.55 : x
  2. Step 2: Convert to fraction form
    93.14/138.76 = 88.55/x
  3. Step 3: Cross multiply
    93.14x = 138.76 × 88.55
  4. Step 4: Simplify right side
    93.14x = 12,286.28
  5. Step 5: Solve for x
    x = 12,286.28/93.14
  6. Step 6: Final answer
    x = 131.92

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.