Home / 126,126.28-189,183.94-31,354.44

Finding the Fourth Proportional to 126,126.28, 189,183.94 and 31,354.44

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Solution

The fourth proportional to 126,126.28, 189,183.94 and 31,354.44 is: 47,030.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,126.28 : 189,183.94 = 31,354.44 : x
  2. Step 2: Convert to fraction form
    126,126.28/189,183.94 = 31,354.44/x
  3. Step 3: Cross multiply
    126,126.28x = 189,183.94 × 31,354.44
  4. Step 4: Simplify right side
    126,126.28x = 5,931,756,495.69
  5. Step 5: Solve for x
    x = 5,931,756,495.69/126,126.28
  6. Step 6: Final answer
    x = 47,030.30

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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.