Home / 225,883.42-311,716.21-129,086.16

Finding the Fourth Proportional to 225,883.42, 311,716.21 and 129,086.16

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Solution

The fourth proportional to 225,883.42, 311,716.21 and 129,086.16 is: 178,137.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    225,883.42 : 311,716.21 = 129,086.16 : x
  2. Step 2: Convert to fraction form
    225,883.42/311,716.21 = 129,086.16/x
  3. Step 3: Cross multiply
    225,883.42x = 311,716.21 × 129,086.16
  4. Step 4: Simplify right side
    225,883.42x = 40,238,249,428.86
  5. Step 5: Solve for x
    x = 40,238,249,428.86/225,883.42
  6. Step 6: Final answer
    x = 178,137.24

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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.