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Finding the Fourth Proportional to 93.68, 141.07 and 82.39

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Solution

The fourth proportional to 93.68, 141.07 and 82.39 is: 124.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    93.68 : 141.07 = 82.39 : x
  2. Step 2: Convert to fraction form
    93.68/141.07 = 82.39/x
  3. Step 3: Cross multiply
    93.68x = 141.07 × 82.39
  4. Step 4: Simplify right side
    93.68x = 11,622.76
  5. Step 5: Solve for x
    x = 11,622.76/93.68
  6. Step 6: Final answer
    x = 124.07

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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.