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Finding the Fourth Proportional to 110.36, 151.62 and 98.86

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Solution

The fourth proportional to 110.36, 151.62 and 98.86 is: 135.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    110.36 : 151.62 = 98.86 : x
  2. Step 2: Convert to fraction form
    110.36/151.62 = 98.86/x
  3. Step 3: Cross multiply
    110.36x = 151.62 × 98.86
  4. Step 4: Simplify right side
    110.36x = 14,988.69
  5. Step 5: Solve for x
    x = 14,988.69/110.36
  6. Step 6: Final answer
    x = 135.81

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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.