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Finding the Third Proportional to 129,816 and 197,160

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Solution

The third proportional to 129,816 and 197,160 is: 299,439.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,816 : 197,160 = 197,160 : x
  2. Step 2: Convert to fraction form
    129,816/197,160 = 197,160/x
  3. Step 3: Cross multiply
    129,816x = 197,160 × 197,160
  4. Step 4: Simplify right side
    129,816x = 38,872,065,600
  5. Step 5: Solve for x
    x = 38,872,065,600/129,816
  6. Step 6: Final answer
    x = 299,439.71

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.