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Finding the Third Proportional to 76,278.38 and 116,685.56

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Solution

The third proportional to 76,278.38 and 116,685.56 is: 178,497.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,278.38 : 116,685.56 = 116,685.56 : x
  2. Step 2: Convert to fraction form
    76,278.38/116,685.56 = 116,685.56/x
  3. Step 3: Cross multiply
    76,278.38x = 116,685.56 × 116,685.56
  4. Step 4: Simplify right side
    76,278.38x = 13,615,520,495.94
  5. Step 5: Solve for x
    x = 13,615,520,495.94/76,278.38
  6. Step 6: Final answer
    x = 178,497.78

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Why These Related Problems?

These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.