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Finding the Fourth Proportional to 93.88, 141.32 and 73.72

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Solution

The fourth proportional to 93.88, 141.32 and 73.72 is: 110.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    93.88 : 141.32 = 73.72 : x
  2. Step 2: Convert to fraction form
    93.88/141.32 = 73.72/x
  3. Step 3: Cross multiply
    93.88x = 141.32 × 73.72
  4. Step 4: Simplify right side
    93.88x = 10,418.11
  5. Step 5: Solve for x
    x = 10,418.11/93.88
  6. Step 6: Final answer
    x = 110.97

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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.