Home / 120,339.21-166,067.24-72,618.87

Finding the Fourth Proportional to 120,339.21, 166,067.24 and 72,618.87

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Solution

The fourth proportional to 120,339.21, 166,067.24 and 72,618.87 is: 100,213.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,339.21 : 166,067.24 = 72,618.87 : x
  2. Step 2: Convert to fraction form
    120,339.21/166,067.24 = 72,618.87/x
  3. Step 3: Cross multiply
    120,339.21x = 166,067.24 × 72,618.87
  4. Step 4: Simplify right side
    120,339.21x = 12,059,614,949.72
  5. Step 5: Solve for x
    x = 12,059,614,949.72/120,339.21
  6. Step 6: Final answer
    x = 100,213.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.