Home / 129,439.05-194,215.14-45,259.62

Finding the Fourth Proportional to 129,439.05, 194,215.14 and 45,259.62

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Solution

The fourth proportional to 129,439.05, 194,215.14 and 45,259.62 is: 67,909.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,439.05 : 194,215.14 = 45,259.62 : x
  2. Step 2: Convert to fraction form
    129,439.05/194,215.14 = 45,259.62/x
  3. Step 3: Cross multiply
    129,439.05x = 194,215.14 × 45,259.62
  4. Step 4: Simplify right side
    129,439.05x = 8,790,103,434.65
  5. Step 5: Solve for x
    x = 8,790,103,434.65/129,439.05
  6. Step 6: Final answer
    x = 67,909.21

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1.5x scale

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.