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Finding the Fourth Proportional to 203,754.70, 281,215.02 and 113,139.64

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Solution

The fourth proportional to 203,754.70, 281,215.02 and 113,139.64 is: 156,151.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,754.70 : 281,215.02 = 113,139.64 : x
  2. Step 2: Convert to fraction form
    203,754.70/281,215.02 = 113,139.64/x
  3. Step 3: Cross multiply
    203,754.70x = 281,215.02 × 113,139.64
  4. Step 4: Simplify right side
    203,754.70x = 31,816,566,125.39
  5. Step 5: Solve for x
    x = 31,816,566,125.39/203,754.70
  6. Step 6: Final answer
    x = 156,151.32

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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.