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Finding the Third Proportional to 63,503 and 139,964

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Solution

The third proportional to 63,503 and 139,964 is: 308,488.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,503 : 139,964 = 139,964 : x
  2. Step 2: Convert to fraction form
    63,503/139,964 = 139,964/x
  3. Step 3: Cross multiply
    63,503x = 139,964 × 139,964
  4. Step 4: Simplify right side
    63,503x = 19,589,921,296
  5. Step 5: Solve for x
    x = 19,589,921,296/63,503
  6. Step 6: Final answer
    x = 308,488.12

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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.