Home / 80,738.64-120,591.18-73,128.48

Finding the Fourth Proportional to 80,738.64, 120,591.18 and 73,128.48

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Solution

The fourth proportional to 80,738.64, 120,591.18 and 73,128.48 is: 109,224.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,738.64 : 120,591.18 = 73,128.48 : x
  2. Step 2: Convert to fraction form
    80,738.64/120,591.18 = 73,128.48/x
  3. Step 3: Cross multiply
    80,738.64x = 120,591.18 × 73,128.48
  4. Step 4: Simplify right side
    80,738.64x = 8,818,649,694.81
  5. Step 5: Solve for x
    x = 8,818,649,694.81/80,738.64
  6. Step 6: Final answer
    x = 109,224.65

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.