Home / 128,074.21-192,120.54-49,188.44

Finding the Fourth Proportional to 128,074.21, 192,120.54 and 49,188.44

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Solution

The fourth proportional to 128,074.21, 192,120.54 and 49,188.44 is: 73,786.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,074.21 : 192,120.54 = 49,188.44 : x
  2. Step 2: Convert to fraction form
    128,074.21/192,120.54 = 49,188.44/x
  3. Step 3: Cross multiply
    128,074.21x = 192,120.54 × 49,188.44
  4. Step 4: Simplify right side
    128,074.21x = 9,450,109,146.41
  5. Step 5: Solve for x
    x = 9,450,109,146.41/128,074.21
  6. Step 6: Final answer
    x = 73,786.20

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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.