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Finding the Fourth Proportional to 119.24, 164.38 and 84.16

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Solution

The fourth proportional to 119.24, 164.38 and 84.16 is: 116.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    119.24 : 164.38 = 84.16 : x
  2. Step 2: Convert to fraction form
    119.24/164.38 = 84.16/x
  3. Step 3: Cross multiply
    119.24x = 164.38 × 84.16
  4. Step 4: Simplify right side
    119.24x = 13,834.22
  5. Step 5: Solve for x
    x = 13,834.22/119.24
  6. Step 6: Final answer
    x = 116.02

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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.