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Finding the Third Proportional to 86,613 and 135,388.50

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Solution

The third proportional to 86,613 and 135,388.50 is: 211,631.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,613 : 135,388.50 = 135,388.50 : x
  2. Step 2: Convert to fraction form
    86,613/135,388.50 = 135,388.50/x
  3. Step 3: Cross multiply
    86,613x = 135,388.50 × 135,388.50
  4. Step 4: Simplify right side
    86,613x = 18,330,045,932.25
  5. Step 5: Solve for x
    x = 18,330,045,932.25/86,613
  6. Step 6: Final answer
    x = 211,631.58

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.