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Finding the Fourth Proportional to 88.07, 121.37 and 67.26

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Solution

The fourth proportional to 88.07, 121.37 and 67.26 is: 92.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    88.07 : 121.37 = 67.26 : x
  2. Step 2: Convert to fraction form
    88.07/121.37 = 67.26/x
  3. Step 3: Cross multiply
    88.07x = 121.37 × 67.26
  4. Step 4: Simplify right side
    88.07x = 8,163.01
  5. Step 5: Solve for x
    x = 8,163.01/88.07
  6. Step 6: Final answer
    x = 92.69

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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.