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Finding the Fourth Proportional to 120.75, 182.06 and 96.99

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Solution

The fourth proportional to 120.75, 182.06 and 96.99 is: 146.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    120.75 : 182.06 = 96.99 : x
  2. Step 2: Convert to fraction form
    120.75/182.06 = 96.99/x
  3. Step 3: Cross multiply
    120.75x = 182.06 × 96.99
  4. Step 4: Simplify right side
    120.75x = 17,657.51
  5. Step 5: Solve for x
    x = 17,657.51/120.75
  6. Step 6: Final answer
    x = 146.23

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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.