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Finding the Third Proportional to 156.94 and 168.19

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Solution

The third proportional to 156.94 and 168.19 is: 180.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    156.94 : 168.19 = 168.19 : x
  2. Step 2: Convert to fraction form
    156.94/168.19 = 168.19/x
  3. Step 3: Cross multiply
    156.94x = 168.19 × 168.19
  4. Step 4: Simplify right side
    156.94x = 28,287.04
  5. Step 5: Solve for x
    x = 28,287.04/156.94
  6. Step 6: Final answer
    x = 180.24

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Why These Related Problems?

These problems maintain the same ratio (1.07) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.