Home / 129,361.75-194,074.91-45,123.12

Finding the Fourth Proportional to 129,361.75, 194,074.91 and 45,123.12

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Solution

The fourth proportional to 129,361.75, 194,074.91 and 45,123.12 is: 67,695.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,361.75 : 194,074.91 = 45,123.12 : x
  2. Step 2: Convert to fraction form
    129,361.75/194,074.91 = 45,123.12/x
  3. Step 3: Cross multiply
    129,361.75x = 194,074.91 × 45,123.12
  4. Step 4: Simplify right side
    129,361.75x = 8,757,265,565.73
  5. Step 5: Solve for x
    x = 8,757,265,565.73/129,361.75
  6. Step 6: Final answer
    x = 67,695.94

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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.