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Finding the Fourth Proportional to 119.07, 178.61 and 92.34

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Solution

The fourth proportional to 119.07, 178.61 and 92.34 is: 138.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    119.07 : 178.61 = 92.34 : x
  2. Step 2: Convert to fraction form
    119.07/178.61 = 92.34/x
  3. Step 3: Cross multiply
    119.07x = 178.61 × 92.34
  4. Step 4: Simplify right side
    119.07x = 16,492.39
  5. Step 5: Solve for x
    x = 16,492.39/119.07
  6. Step 6: Final answer
    x = 138.51

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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.