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Finding the Third Proportional to 78,339.50 and 117,214.50

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Solution

The third proportional to 78,339.50 and 117,214.50 is: 175,380.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,339.50 : 117,214.50 = 117,214.50 : x
  2. Step 2: Convert to fraction form
    78,339.50/117,214.50 = 117,214.50/x
  3. Step 3: Cross multiply
    78,339.50x = 117,214.50 × 117,214.50
  4. Step 4: Simplify right side
    78,339.50x = 13,739,239,010.25
  5. Step 5: Solve for x
    x = 13,739,239,010.25/78,339.50
  6. Step 6: Final answer
    x = 175,380.73

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.