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Finding the Third Proportional to 67,170 and 99,816

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Solution

The third proportional to 67,170 and 99,816 is: 148,328.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,170 : 99,816 = 99,816 : x
  2. Step 2: Convert to fraction form
    67,170/99,816 = 99,816/x
  3. Step 3: Cross multiply
    67,170x = 99,816 × 99,816
  4. Step 4: Simplify right side
    67,170x = 9,963,233,856
  5. Step 5: Solve for x
    x = 9,963,233,856/67,170
  6. Step 6: Final answer
    x = 148,328.63

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.