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Finding the Fourth Proportional to 161.02, 222.16 and 136.23

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Solution

The fourth proportional to 161.02, 222.16 and 136.23 is: 187.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    161.02 : 222.16 = 136.23 : x
  2. Step 2: Convert to fraction form
    161.02/222.16 = 136.23/x
  3. Step 3: Cross multiply
    161.02x = 222.16 × 136.23
  4. Step 4: Simplify right side
    161.02x = 30,264.86
  5. Step 5: Solve for x
    x = 30,264.86/161.02
  6. Step 6: Final answer
    x = 187.96

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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.