Home / 80,836.20-121,254.30-73,837.80

Finding the Fourth Proportional to 80,836.20, 121,254.30 and 73,837.80

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Solution

The fourth proportional to 80,836.20, 121,254.30 and 73,837.80 is: 110,756.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,836.20 : 121,254.30 = 73,837.80 : x
  2. Step 2: Convert to fraction form
    80,836.20/121,254.30 = 73,837.80/x
  3. Step 3: Cross multiply
    80,836.20x = 121,254.30 × 73,837.80
  4. Step 4: Simplify right side
    80,836.20x = 8,953,150,752.54
  5. Step 5: Solve for x
    x = 8,953,150,752.54/80,836.20
  6. Step 6: Final answer
    x = 110,756.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.