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Finding the Third Proportional to 72,135 and 154,242

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Solution

The third proportional to 72,135 and 154,242 is: 329,806.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,135 : 154,242 = 154,242 : x
  2. Step 2: Convert to fraction form
    72,135/154,242 = 154,242/x
  3. Step 3: Cross multiply
    72,135x = 154,242 × 154,242
  4. Step 4: Simplify right side
    72,135x = 23,790,594,564
  5. Step 5: Solve for x
    x = 23,790,594,564/72,135
  6. Step 6: Final answer
    x = 329,806.54

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.