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Finding the Third Proportional to 72,450 and 153,620

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Solution

The third proportional to 72,450 and 153,620 is: 325,729.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,450 : 153,620 = 153,620 : x
  2. Step 2: Convert to fraction form
    72,450/153,620 = 153,620/x
  3. Step 3: Cross multiply
    72,450x = 153,620 × 153,620
  4. Step 4: Simplify right side
    72,450x = 23,599,104,400
  5. Step 5: Solve for x
    x = 23,599,104,400/72,450
  6. Step 6: Final answer
    x = 325,729.53

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Why These Related Problems?

These problems maintain the same ratio (2.12) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.