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Finding the Third Proportional to 68,144 and 99,988

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Solution

The third proportional to 68,144 and 99,988 is: 146,712.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,144 : 99,988 = 99,988 : x
  2. Step 2: Convert to fraction form
    68,144/99,988 = 99,988/x
  3. Step 3: Cross multiply
    68,144x = 99,988 × 99,988
  4. Step 4: Simplify right side
    68,144x = 9,997,600,144
  5. Step 5: Solve for x
    x = 9,997,600,144/68,144
  6. Step 6: Final answer
    x = 146,712.85

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Why These Related Problems?

These problems maintain the same ratio (1.47) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.