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Finding the Third Proportional to 70,641 and 105,963

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Solution

The third proportional to 70,641 and 105,963 is: 158,946.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,641 : 105,963 = 105,963 : x
  2. Step 2: Convert to fraction form
    70,641/105,963 = 105,963/x
  3. Step 3: Cross multiply
    70,641x = 105,963 × 105,963
  4. Step 4: Simplify right side
    70,641x = 11,228,157,369
  5. Step 5: Solve for x
    x = 11,228,157,369/70,641
  6. Step 6: Final answer
    x = 158,946.75

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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.