Home / 147,809.28-203,977.44-80,742.72

Finding the Fourth Proportional to 147,809.28, 203,977.44 and 80,742.72

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Solution

The fourth proportional to 147,809.28, 203,977.44 and 80,742.72 is: 111,425.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,809.28 : 203,977.44 = 80,742.72 : x
  2. Step 2: Convert to fraction form
    147,809.28/203,977.44 = 80,742.72/x
  3. Step 3: Cross multiply
    147,809.28x = 203,977.44 × 80,742.72
  4. Step 4: Simplify right side
    147,809.28x = 16,469,693,324.24
  5. Step 5: Solve for x
    x = 16,469,693,324.24/147,809.28
  6. Step 6: Final answer
    x = 111,425.30

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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.