Home / 207,923.90-311,884.94-81,474.80

Finding the Fourth Proportional to 207,923.90, 311,884.94 and 81,474.80

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Solution

The fourth proportional to 207,923.90, 311,884.94 and 81,474.80 is: 122,211.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,923.90 : 311,884.94 = 81,474.80 : x
  2. Step 2: Convert to fraction form
    207,923.90/311,884.94 = 81,474.80/x
  3. Step 3: Cross multiply
    207,923.90x = 311,884.94 × 81,474.80
  4. Step 4: Simplify right side
    207,923.90x = 25,410,763,109.51
  5. Step 5: Solve for x
    x = 25,410,763,109.51/207,923.90
  6. Step 6: Final answer
    x = 122,211.84

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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.