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Finding the Fourth Proportional to 146.08, 201.64 and 99.69

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Solution

The fourth proportional to 146.08, 201.64 and 99.69 is: 137.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.08 : 201.64 = 99.69 : x
  2. Step 2: Convert to fraction form
    146.08/201.64 = 99.69/x
  3. Step 3: Cross multiply
    146.08x = 201.64 × 99.69
  4. Step 4: Simplify right side
    146.08x = 20,101.49
  5. Step 5: Solve for x
    x = 20,101.49/146.08
  6. Step 6: Final answer
    x = 137.61

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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.