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Finding the Fourth Proportional to 88.11, 131.47 and 73.67

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Solution

The fourth proportional to 88.11, 131.47 and 73.67 is: 109.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    88.11 : 131.47 = 73.67 : x
  2. Step 2: Convert to fraction form
    88.11/131.47 = 73.67/x
  3. Step 3: Cross multiply
    88.11x = 131.47 × 73.67
  4. Step 4: Simplify right side
    88.11x = 9,684.55
  5. Step 5: Solve for x
    x = 9,684.55/88.11
  6. Step 6: Final answer
    x = 109.91

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.