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Finding the Fourth Proportional to 93.44, 139.17 and 92.36

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Solution

The fourth proportional to 93.44, 139.17 and 92.36 is: 137.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    93.44 : 139.17 = 92.36 : x
  2. Step 2: Convert to fraction form
    93.44/139.17 = 92.36/x
  3. Step 3: Cross multiply
    93.44x = 139.17 × 92.36
  4. Step 4: Simplify right side
    93.44x = 12,853.28
  5. Step 5: Solve for x
    x = 12,853.28/93.44
  6. Step 6: Final answer
    x = 137.56

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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.