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Finding the Fourth Proportional to 139.93, 192.76 and 119.14

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Solution

The fourth proportional to 139.93, 192.76 and 119.14 is: 164.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    139.93 : 192.76 = 119.14 : x
  2. Step 2: Convert to fraction form
    139.93/192.76 = 119.14/x
  3. Step 3: Cross multiply
    139.93x = 192.76 × 119.14
  4. Step 4: Simplify right side
    139.93x = 22,965.43
  5. Step 5: Solve for x
    x = 22,965.43/139.93
  6. Step 6: Final answer
    x = 164.12

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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.