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Finding the Fourth Proportional to 93.92, 141.86 and 93.17

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Solution

The fourth proportional to 93.92, 141.86 and 93.17 is: 140.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    93.92 : 141.86 = 93.17 : x
  2. Step 2: Convert to fraction form
    93.92/141.86 = 93.17/x
  3. Step 3: Cross multiply
    93.92x = 141.86 × 93.17
  4. Step 4: Simplify right side
    93.92x = 13,215.92
  5. Step 5: Solve for x
    x = 13,215.92/93.92
  6. Step 6: Final answer
    x = 140.72

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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.