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Finding the Fourth Proportional to 110.81, 152.76 and 85.95

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Solution

The fourth proportional to 110.81, 152.76 and 85.95 is: 118.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    110.81 : 152.76 = 85.95 : x
  2. Step 2: Convert to fraction form
    110.81/152.76 = 85.95/x
  3. Step 3: Cross multiply
    110.81x = 152.76 × 85.95
  4. Step 4: Simplify right side
    110.81x = 13,129.72
  5. Step 5: Solve for x
    x = 13,129.72/110.81
  6. Step 6: Final answer
    x = 118.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.