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Finding the Third Proportional to 139,511.75 and 221,722.50

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Solution

The third proportional to 139,511.75 and 221,722.50 is: 352,377.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,511.75 : 221,722.50 = 221,722.50 : x
  2. Step 2: Convert to fraction form
    139,511.75/221,722.50 = 221,722.50/x
  3. Step 3: Cross multiply
    139,511.75x = 221,722.50 × 221,722.50
  4. Step 4: Simplify right side
    139,511.75x = 49,160,867,006.25
  5. Step 5: Solve for x
    x = 49,160,867,006.25/139,511.75
  6. Step 6: Final answer
    x = 352,377.97

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.