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Finding the Third Proportional to 74,308 and 115,188

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Solution

The third proportional to 74,308 and 115,188 is: 178,557.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,308 : 115,188 = 115,188 : x
  2. Step 2: Convert to fraction form
    74,308/115,188 = 115,188/x
  3. Step 3: Cross multiply
    74,308x = 115,188 × 115,188
  4. Step 4: Simplify right side
    74,308x = 13,268,275,344
  5. Step 5: Solve for x
    x = 13,268,275,344/74,308
  6. Step 6: Final answer
    x = 178,557.83

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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.