Home / 80,789.00-121,184.10-28,198.53

Finding the Fourth Proportional to 80,789.00, 121,184.10 and 28,198.53

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Solution

The fourth proportional to 80,789.00, 121,184.10 and 28,198.53 is: 42,298.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,789.00 : 121,184.10 = 28,198.53 : x
  2. Step 2: Convert to fraction form
    80,789.00/121,184.10 = 28,198.53/x
  3. Step 3: Cross multiply
    80,789.00x = 121,184.10 × 28,198.53
  4. Step 4: Simplify right side
    80,789.00x = 3,417,213,479.37
  5. Step 5: Solve for x
    x = 3,417,213,479.37/80,789.00
  6. Step 6: Final answer
    x = 42,298.01

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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.