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Finding the Third Proportional to 127,905.75 and 178,912.13

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Solution

The third proportional to 127,905.75 and 178,912.13 is: 250,258.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,905.75 : 178,912.13 = 178,912.13 : x
  2. Step 2: Convert to fraction form
    127,905.75/178,912.13 = 178,912.13/x
  3. Step 3: Cross multiply
    127,905.75x = 178,912.13 × 178,912.13
  4. Step 4: Simplify right side
    127,905.75x = 32,009,548,472.02
  5. Step 5: Solve for x
    x = 32,009,548,472.02/127,905.75
  6. Step 6: Final answer
    x = 250,258.87

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.