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Finding the Fourth Proportional to 103.77, 154.89 and 93.99

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Solution

The fourth proportional to 103.77, 154.89 and 93.99 is: 140.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    103.77 : 154.89 = 93.99 : x
  2. Step 2: Convert to fraction form
    103.77/154.89 = 93.99/x
  3. Step 3: Cross multiply
    103.77x = 154.89 × 93.99
  4. Step 4: Simplify right side
    103.77x = 14,558.11
  5. Step 5: Solve for x
    x = 14,558.11/103.77
  6. Step 6: Final answer
    x = 140.29

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.