Home / 231,022.46-318,790.21-129,033.76

Finding the Fourth Proportional to 231,022.46, 318,790.21 and 129,033.76

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Solution

The fourth proportional to 231,022.46, 318,790.21 and 129,033.76 is: 178,054.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,022.46 : 318,790.21 = 129,033.76 : x
  2. Step 2: Convert to fraction form
    231,022.46/318,790.21 = 129,033.76/x
  3. Step 3: Cross multiply
    231,022.46x = 318,790.21 × 129,033.76
  4. Step 4: Simplify right side
    231,022.46x = 41,134,699,447.49
  5. Step 5: Solve for x
    x = 41,134,699,447.49/231,022.46
  6. Step 6: Final answer
    x = 178,054.98

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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.