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Finding the Third Proportional to 78,640.88 and 168,277.50

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Solution

The third proportional to 78,640.88 and 168,277.50 is: 360,083.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,640.88 : 168,277.50 = 168,277.50 : x
  2. Step 2: Convert to fraction form
    78,640.88/168,277.50 = 168,277.50/x
  3. Step 3: Cross multiply
    78,640.88x = 168,277.50 × 168,277.50
  4. Step 4: Simplify right side
    78,640.88x = 28,317,317,006.25
  5. Step 5: Solve for x
    x = 28,317,317,006.25/78,640.88
  6. Step 6: Final answer
    x = 360,083.95

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.