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Finding the Third Proportional to 115,419 and 180,418.50

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Solution

The third proportional to 115,419 and 180,418.50 is: 282,023.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,419 : 180,418.50 = 180,418.50 : x
  2. Step 2: Convert to fraction form
    115,419/180,418.50 = 180,418.50/x
  3. Step 3: Cross multiply
    115,419x = 180,418.50 × 180,418.50
  4. Step 4: Simplify right side
    115,419x = 32,550,835,142.25
  5. Step 5: Solve for x
    x = 32,550,835,142.25/115,419
  6. Step 6: Final answer
    x = 282,023.19

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.