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Finding the Fourth Proportional to 93.72, 141.33 and 88.68

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Solution

The fourth proportional to 93.72, 141.33 and 88.68 is: 133.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    93.72 : 141.33 = 88.68 : x
  2. Step 2: Convert to fraction form
    93.72/141.33 = 88.68/x
  3. Step 3: Cross multiply
    93.72x = 141.33 × 88.68
  4. Step 4: Simplify right side
    93.72x = 12,533.14
  5. Step 5: Solve for x
    x = 12,533.14/93.72
  6. Step 6: Final answer
    x = 133.73

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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.