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Finding the Third Proportional to 72,195.75 and 156,979.13

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Solution

The third proportional to 72,195.75 and 156,979.13 is: 341,328.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,195.75 : 156,979.13 = 156,979.13 : x
  2. Step 2: Convert to fraction form
    72,195.75/156,979.13 = 156,979.13/x
  3. Step 3: Cross multiply
    72,195.75x = 156,979.13 × 156,979.13
  4. Step 4: Simplify right side
    72,195.75x = 24,642,445,685.77
  5. Step 5: Solve for x
    x = 24,642,445,685.77/72,195.75
  6. Step 6: Final answer
    x = 341,328.20

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.