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Finding the Third Proportional to 61,115 and 135,352.50

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Solution

The third proportional to 61,115 and 135,352.50 is: 299,767.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,115 : 135,352.50 = 135,352.50 : x
  2. Step 2: Convert to fraction form
    61,115/135,352.50 = 135,352.50/x
  3. Step 3: Cross multiply
    61,115x = 135,352.50 × 135,352.50
  4. Step 4: Simplify right side
    61,115x = 18,320,299,256.25
  5. Step 5: Solve for x
    x = 18,320,299,256.25/61,115
  6. Step 6: Final answer
    x = 299,767.64

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Why These Related Problems?

These problems maintain the same ratio (2.21) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.