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Finding the Fourth Proportional to 119.09, 178.62 and 108.07

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Solution

The fourth proportional to 119.09, 178.62 and 108.07 is: 162.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    119.09 : 178.62 = 108.07 : x
  2. Step 2: Convert to fraction form
    119.09/178.62 = 108.07/x
  3. Step 3: Cross multiply
    119.09x = 178.62 × 108.07
  4. Step 4: Simplify right side
    119.09x = 19,303.46
  5. Step 5: Solve for x
    x = 19,303.46/119.09
  6. Step 6: Final answer
    x = 162.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.