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Finding the Fourth Proportional to 158.15, 236.93 and 112.39

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Solution

The fourth proportional to 158.15, 236.93 and 112.39 is: 168.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    158.15 : 236.93 = 112.39 : x
  2. Step 2: Convert to fraction form
    158.15/236.93 = 112.39/x
  3. Step 3: Cross multiply
    158.15x = 236.93 × 112.39
  4. Step 4: Simplify right side
    158.15x = 26,627.41
  5. Step 5: Solve for x
    x = 26,627.41/158.15
  6. Step 6: Final answer
    x = 168.37

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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.