Home / 147,811.28-203,980.20-80,744.72

Finding the Fourth Proportional to 147,811.28, 203,980.20 and 80,744.72

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Solution

The fourth proportional to 147,811.28, 203,980.20 and 80,744.72 is: 111,428.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,811.28 : 203,980.20 = 80,744.72 : x
  2. Step 2: Convert to fraction form
    147,811.28/203,980.20 = 80,744.72/x
  3. Step 3: Cross multiply
    147,811.28x = 203,980.20 × 80,744.72
  4. Step 4: Simplify right side
    147,811.28x = 16,470,324,134.54
  5. Step 5: Solve for x
    x = 16,470,324,134.54/147,811.28
  6. Step 6: Final answer
    x = 111,428.06

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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.