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Finding the Fourth Proportional to 117.05, 161.17 and 92.48

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Solution

The fourth proportional to 117.05, 161.17 and 92.48 is: 127.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    117.05 : 161.17 = 92.48 : x
  2. Step 2: Convert to fraction form
    117.05/161.17 = 92.48/x
  3. Step 3: Cross multiply
    117.05x = 161.17 × 92.48
  4. Step 4: Simplify right side
    117.05x = 14,903.96
  5. Step 5: Solve for x
    x = 14,903.96/117.05
  6. Step 6: Final answer
    x = 127.34

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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.