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Finding the Third Proportional to 98,644 and 139,579

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Solution

The third proportional to 98,644 and 139,579 is: 197,501.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,644 : 139,579 = 139,579 : x
  2. Step 2: Convert to fraction form
    98,644/139,579 = 139,579/x
  3. Step 3: Cross multiply
    98,644x = 139,579 × 139,579
  4. Step 4: Simplify right side
    98,644x = 19,482,297,241
  5. Step 5: Solve for x
    x = 19,482,297,241/98,644
  6. Step 6: Final answer
    x = 197,501.09

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Why These Related Problems?

These problems maintain the same ratio (1.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.