Home / 80,965.43-121,520.36-80,664.02

Finding the Fourth Proportional to 80,965.43, 121,520.36 and 80,664.02

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Solution

The fourth proportional to 80,965.43, 121,520.36 and 80,664.02 is: 121,067.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,965.43 : 121,520.36 = 80,664.02 : x
  2. Step 2: Convert to fraction form
    80,965.43/121,520.36 = 80,664.02/x
  3. Step 3: Cross multiply
    80,965.43x = 121,520.36 × 80,664.02
  4. Step 4: Simplify right side
    80,965.43x = 9,802,319,738.53
  5. Step 5: Solve for x
    x = 9,802,319,738.53/80,965.43
  6. Step 6: Final answer
    x = 121,067.97

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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.