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Finding the Fourth Proportional to 110.07, 151.09 and 100.35

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Solution

The fourth proportional to 110.07, 151.09 and 100.35 is: 137.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    110.07 : 151.09 = 100.35 : x
  2. Step 2: Convert to fraction form
    110.07/151.09 = 100.35/x
  3. Step 3: Cross multiply
    110.07x = 151.09 × 100.35
  4. Step 4: Simplify right side
    110.07x = 15,161.63
  5. Step 5: Solve for x
    x = 15,161.63/110.07
  6. Step 6: Final answer
    x = 137.75

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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.