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Finding the Fourth Proportional to 146.02, 220.03 and 120.90

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Solution

The fourth proportional to 146.02, 220.03 and 120.90 is: 182.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.02 : 220.03 = 120.90 : x
  2. Step 2: Convert to fraction form
    146.02/220.03 = 120.90/x
  3. Step 3: Cross multiply
    146.02x = 220.03 × 120.90
  4. Step 4: Simplify right side
    146.02x = 26,601.32
  5. Step 5: Solve for x
    x = 26,601.32/146.02
  6. Step 6: Final answer
    x = 182.18

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.