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Finding the Third Proportional to 100,969 and 156,779

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Solution

The third proportional to 100,969 and 156,779 is: 243,437.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,969 : 156,779 = 156,779 : x
  2. Step 2: Convert to fraction form
    100,969/156,779 = 156,779/x
  3. Step 3: Cross multiply
    100,969x = 156,779 × 156,779
  4. Step 4: Simplify right side
    100,969x = 24,579,654,841
  5. Step 5: Solve for x
    x = 24,579,654,841/100,969
  6. Step 6: Final answer
    x = 243,437.64

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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.