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Finding the Third Proportional to 62,985.50 and 138,257.50

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Solution

The third proportional to 62,985.50 and 138,257.50 is: 303,484.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,985.50 : 138,257.50 = 138,257.50 : x
  2. Step 2: Convert to fraction form
    62,985.50/138,257.50 = 138,257.50/x
  3. Step 3: Cross multiply
    62,985.50x = 138,257.50 × 138,257.50
  4. Step 4: Simplify right side
    62,985.50x = 19,115,136,306.25
  5. Step 5: Solve for x
    x = 19,115,136,306.25/62,985.50
  6. Step 6: Final answer
    x = 303,484.71

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.