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Finding the Fourth Proportional to 161.88, 241.45 and 136.36

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Solution

The fourth proportional to 161.88, 241.45 and 136.36 is: 203.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    161.88 : 241.45 = 136.36 : x
  2. Step 2: Convert to fraction form
    161.88/241.45 = 136.36/x
  3. Step 3: Cross multiply
    161.88x = 241.45 × 136.36
  4. Step 4: Simplify right side
    161.88x = 32,924.12
  5. Step 5: Solve for x
    x = 32,924.12/161.88
  6. Step 6: Final answer
    x = 203.39

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.