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Finding the Third Proportional to 101,100 and 156,979

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Solution

The third proportional to 101,100 and 156,979 is: 243,742.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,100 : 156,979 = 156,979 : x
  2. Step 2: Convert to fraction form
    101,100/156,979 = 156,979/x
  3. Step 3: Cross multiply
    101,100x = 156,979 × 156,979
  4. Step 4: Simplify right side
    101,100x = 24,642,406,441
  5. Step 5: Solve for x
    x = 24,642,406,441/101,100
  6. Step 6: Final answer
    x = 243,742.89

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.