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Finding the Third Proportional to 111.50 and 168

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Solution

The third proportional to 111.50 and 168 is: 253.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    111.50 : 168 = 168 : x
  2. Step 2: Convert to fraction form
    111.50/168 = 168/x
  3. Step 3: Cross multiply
    111.50x = 168 × 168
  4. Step 4: Simplify right side
    111.50x = 28,224
  5. Step 5: Solve for x
    x = 28,224/111.50
  6. Step 6: Final answer
    x = 253.13

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.