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Finding the Fourth Proportional to 118.16, 162.10 and 110.80

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Solution

The fourth proportional to 118.16, 162.10 and 110.80 is: 152.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    118.16 : 162.10 = 110.80 : x
  2. Step 2: Convert to fraction form
    118.16/162.10 = 110.80/x
  3. Step 3: Cross multiply
    118.16x = 162.10 × 110.80
  4. Step 4: Simplify right side
    118.16x = 17,960.68
  5. Step 5: Solve for x
    x = 17,960.68/118.16
  6. Step 6: Final answer
    x = 152.00

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.