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Finding the Fourth Proportional to 109.10, 162.85 and 94.75

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Solution

The fourth proportional to 109.10, 162.85 and 94.75 is: 141.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    109.10 : 162.85 = 94.75 : x
  2. Step 2: Convert to fraction form
    109.10/162.85 = 94.75/x
  3. Step 3: Cross multiply
    109.10x = 162.85 × 94.75
  4. Step 4: Simplify right side
    109.10x = 15,430.04
  5. Step 5: Solve for x
    x = 15,430.04/109.10
  6. Step 6: Final answer
    x = 141.43

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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.