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Finding the Fourth Proportional to 200,080.20, 276,134.50 and 115,213.80

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Solution

The fourth proportional to 200,080.20, 276,134.50 and 115,213.80 is: 159,008.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,080.20 : 276,134.50 = 115,213.80 : x
  2. Step 2: Convert to fraction form
    200,080.20/276,134.50 = 115,213.80/x
  3. Step 3: Cross multiply
    200,080.20x = 276,134.50 × 115,213.80
  4. Step 4: Simplify right side
    200,080.20x = 31,814,505,056.10
  5. Step 5: Solve for x
    x = 31,814,505,056.10/200,080.20
  6. Step 6: Final answer
    x = 159,008.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.