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Finding the Third Proportional to 86,877.56 and 135,391.50

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Solution

The third proportional to 86,877.56 and 135,391.50 is: 210,996.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,877.56 : 135,391.50 = 135,391.50 : x
  2. Step 2: Convert to fraction form
    86,877.56/135,391.50 = 135,391.50/x
  3. Step 3: Cross multiply
    86,877.56x = 135,391.50 × 135,391.50
  4. Step 4: Simplify right side
    86,877.56x = 18,330,858,272.25
  5. Step 5: Solve for x
    x = 18,330,858,272.25/86,877.56
  6. Step 6: Final answer
    x = 210,996.46

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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.