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Finding the Fourth Proportional to 181,212.80, 271,819.20 and 131,187.20

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Solution

The fourth proportional to 181,212.80, 271,819.20 and 131,187.20 is: 196,780.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,212.80 : 271,819.20 = 131,187.20 : x
  2. Step 2: Convert to fraction form
    181,212.80/271,819.20 = 131,187.20/x
  3. Step 3: Cross multiply
    181,212.80x = 271,819.20 × 131,187.20
  4. Step 4: Simplify right side
    181,212.80x = 35,659,199,754.24
  5. Step 5: Solve for x
    x = 35,659,199,754.24/181,212.80
  6. Step 6: Final answer
    x = 196,780.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.