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Finding the Third Proportional to 83,136 and 121,788.75

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Solution

The third proportional to 83,136 and 121,788.75 is: 178,412.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,136 : 121,788.75 = 121,788.75 : x
  2. Step 2: Convert to fraction form
    83,136/121,788.75 = 121,788.75/x
  3. Step 3: Cross multiply
    83,136x = 121,788.75 × 121,788.75
  4. Step 4: Simplify right side
    83,136x = 14,832,499,626.56
  5. Step 5: Solve for x
    x = 14,832,499,626.56/83,136
  6. Step 6: Final answer
    x = 178,412.48

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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.