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Finding the Third Proportional to 78,000.75 and 168,455.25

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Solution

The third proportional to 78,000.75 and 168,455.25 is: 363,806.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,000.75 : 168,455.25 = 168,455.25 : x
  2. Step 2: Convert to fraction form
    78,000.75/168,455.25 = 168,455.25/x
  3. Step 3: Cross multiply
    78,000.75x = 168,455.25 × 168,455.25
  4. Step 4: Simplify right side
    78,000.75x = 28,377,171,252.56
  5. Step 5: Solve for x
    x = 28,377,171,252.56/78,000.75
  6. Step 6: Final answer
    x = 363,806.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.16) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.