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Finding the Third Proportional to 68,820 and 100,574

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Solution

The third proportional to 68,820 and 100,574 is: 146,979.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,820 : 100,574 = 100,574 : x
  2. Step 2: Convert to fraction form
    68,820/100,574 = 100,574/x
  3. Step 3: Cross multiply
    68,820x = 100,574 × 100,574
  4. Step 4: Simplify right side
    68,820x = 10,115,129,476
  5. Step 5: Solve for x
    x = 10,115,129,476/68,820
  6. Step 6: Final answer
    x = 146,979.50

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Why These Related Problems?

These problems maintain the same ratio (1.46) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.