Home / 129,659.14-194,488.74-40,919.56

Finding the Fourth Proportional to 129,659.14, 194,488.74 and 40,919.56

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Solution

The fourth proportional to 129,659.14, 194,488.74 and 40,919.56 is: 61,379.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,659.14 : 194,488.74 = 40,919.56 : x
  2. Step 2: Convert to fraction form
    129,659.14/194,488.74 = 40,919.56/x
  3. Step 3: Cross multiply
    129,659.14x = 194,488.74 × 40,919.56
  4. Step 4: Simplify right side
    129,659.14x = 7,958,393,665.75
  5. Step 5: Solve for x
    x = 7,958,393,665.75/129,659.14
  6. Step 6: Final answer
    x = 61,379.35

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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.