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Finding the Third Proportional to 122,139 and 193,866.75

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Solution

The third proportional to 122,139 and 193,866.75 is: 307,717.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,139 : 193,866.75 = 193,866.75 : x
  2. Step 2: Convert to fraction form
    122,139/193,866.75 = 193,866.75/x
  3. Step 3: Cross multiply
    122,139x = 193,866.75 × 193,866.75
  4. Step 4: Simplify right side
    122,139x = 37,584,316,755.56
  5. Step 5: Solve for x
    x = 37,584,316,755.56/122,139
  6. Step 6: Final answer
    x = 307,717.57

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.