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Finding the Third Proportional to 77,982 and 118,615

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Solution

The third proportional to 77,982 and 118,615 is: 180,420.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,982 : 118,615 = 118,615 : x
  2. Step 2: Convert to fraction form
    77,982/118,615 = 118,615/x
  3. Step 3: Cross multiply
    77,982x = 118,615 × 118,615
  4. Step 4: Simplify right side
    77,982x = 14,069,518,225
  5. Step 5: Solve for x
    x = 14,069,518,225/77,982
  6. Step 6: Final answer
    x = 180,420.07

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Why These Related Problems?

These problems maintain the same ratio (1.52) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.