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Finding the Fourth Proportional to 93.03, 139.20 and 67.38

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Solution

The fourth proportional to 93.03, 139.20 and 67.38 is: 100.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    93.03 : 139.20 = 67.38 : x
  2. Step 2: Convert to fraction form
    93.03/139.20 = 67.38/x
  3. Step 3: Cross multiply
    93.03x = 139.20 × 67.38
  4. Step 4: Simplify right side
    93.03x = 9,379.30
  5. Step 5: Solve for x
    x = 9,379.30/93.03
  6. Step 6: Final answer
    x = 100.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.