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Finding the Fourth Proportional to 116.15, 174.05 and 103.94

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Solution

The fourth proportional to 116.15, 174.05 and 103.94 is: 155.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.15 : 174.05 = 103.94 : x
  2. Step 2: Convert to fraction form
    116.15/174.05 = 103.94/x
  3. Step 3: Cross multiply
    116.15x = 174.05 × 103.94
  4. Step 4: Simplify right side
    116.15x = 18,089.37
  5. Step 5: Solve for x
    x = 18,089.37/116.15
  6. Step 6: Final answer
    x = 155.75

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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.