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Finding the Fourth Proportional to 146.23, 201.70 and 90.92

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Solution

The fourth proportional to 146.23, 201.70 and 90.92 is: 125.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.23 : 201.70 = 90.92 : x
  2. Step 2: Convert to fraction form
    146.23/201.70 = 90.92/x
  3. Step 3: Cross multiply
    146.23x = 201.70 × 90.92
  4. Step 4: Simplify right side
    146.23x = 18,338.56
  5. Step 5: Solve for x
    x = 18,338.56/146.23
  6. Step 6: Final answer
    x = 125.41

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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.