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Finding the Third Proportional to 109,728 and 164,143.13

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Solution

The third proportional to 109,728 and 164,143.13 is: 245,543.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,728 : 164,143.13 = 164,143.13 : x
  2. Step 2: Convert to fraction form
    109,728/164,143.13 = 164,143.13/x
  3. Step 3: Cross multiply
    109,728x = 164,143.13 × 164,143.13
  4. Step 4: Simplify right side
    109,728x = 26,942,965,484.77
  5. Step 5: Solve for x
    x = 26,942,965,484.77/109,728
  6. Step 6: Final answer
    x = 245,543.21

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.