Home / 80,121.06-120,172.41-20,962.44

Finding the Fourth Proportional to 80,121.06, 120,172.41 and 20,962.44

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Solution

The fourth proportional to 80,121.06, 120,172.41 and 20,962.44 is: 31,441.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,121.06 : 120,172.41 = 20,962.44 : x
  2. Step 2: Convert to fraction form
    80,121.06/120,172.41 = 20,962.44/x
  3. Step 3: Cross multiply
    80,121.06x = 120,172.41 × 20,962.44
  4. Step 4: Simplify right side
    80,121.06x = 2,519,106,934.28
  5. Step 5: Solve for x
    x = 2,519,106,934.28/80,121.06
  6. Step 6: Final answer
    x = 31,441.26

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1.5x scale

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.