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Finding the Third Proportional to 71,364 and 153,690

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Solution

The third proportional to 71,364 and 153,690 is: 330,987.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,364 : 153,690 = 153,690 : x
  2. Step 2: Convert to fraction form
    71,364/153,690 = 153,690/x
  3. Step 3: Cross multiply
    71,364x = 153,690 × 153,690
  4. Step 4: Simplify right side
    71,364x = 23,620,616,100
  5. Step 5: Solve for x
    x = 23,620,616,100/71,364
  6. Step 6: Final answer
    x = 330,987.84

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.