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Finding the Fourth Proportional to 146.81, 202.42 and 107.39

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Solution

The fourth proportional to 146.81, 202.42 and 107.39 is: 148.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.81 : 202.42 = 107.39 : x
  2. Step 2: Convert to fraction form
    146.81/202.42 = 107.39/x
  3. Step 3: Cross multiply
    146.81x = 202.42 × 107.39
  4. Step 4: Simplify right side
    146.81x = 21,737.88
  5. Step 5: Solve for x
    x = 21,737.88/146.81
  6. Step 6: Final answer
    x = 148.07

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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.