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Finding the Fourth Proportional to 110.84, 152.78 and 106.68

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Solution

The fourth proportional to 110.84, 152.78 and 106.68 is: 147.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    110.84 : 152.78 = 106.68 : x
  2. Step 2: Convert to fraction form
    110.84/152.78 = 106.68/x
  3. Step 3: Cross multiply
    110.84x = 152.78 × 106.68
  4. Step 4: Simplify right side
    110.84x = 16,298.57
  5. Step 5: Solve for x
    x = 16,298.57/110.84
  6. Step 6: Final answer
    x = 147.05

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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.