Home / 225,879.12-311,729.00-129,097.23

Finding the Fourth Proportional to 225,879.12, 311,729.00 and 129,097.23

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Solution

The fourth proportional to 225,879.12, 311,729.00 and 129,097.23 is: 178,163.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,879.12 : 311,729.00 = 129,097.23 : x
  2. Step 2: Convert to fraction form
    225,879.12/311,729.00 = 129,097.23/x
  3. Step 3: Cross multiply
    225,879.12x = 311,729.00 × 129,097.23
  4. Step 4: Simplify right side
    225,879.12x = 40,243,349,765.18
  5. Step 5: Solve for x
    x = 40,243,349,765.18/225,879.12
  6. Step 6: Final answer
    x = 178,163.21

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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.