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Finding the Third Proportional to 76,820 and 118,692

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Solution

The third proportional to 76,820 and 118,692 is: 183,387.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,820 : 118,692 = 118,692 : x
  2. Step 2: Convert to fraction form
    76,820/118,692 = 118,692/x
  3. Step 3: Cross multiply
    76,820x = 118,692 × 118,692
  4. Step 4: Simplify right side
    76,820x = 14,087,790,864
  5. Step 5: Solve for x
    x = 14,087,790,864/76,820
  6. Step 6: Final answer
    x = 183,387.02

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.