Home / 80,067.20-120,634.44-72,477.63

Finding the Fourth Proportional to 80,067.20, 120,634.44 and 72,477.63

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Solution

The fourth proportional to 80,067.20, 120,634.44 and 72,477.63 is: 109,199.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,067.20 : 120,634.44 = 72,477.63 : x
  2. Step 2: Convert to fraction form
    80,067.20/120,634.44 = 72,477.63/x
  3. Step 3: Cross multiply
    80,067.20x = 120,634.44 × 72,477.63
  4. Step 4: Simplify right side
    80,067.20x = 8,743,298,307.58
  5. Step 5: Solve for x
    x = 8,743,298,307.58/80,067.20
  6. Step 6: Final answer
    x = 109,199.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.