Home / 129,546.72-194,320.12-100,007.68

Finding the Fourth Proportional to 129,546.72, 194,320.12 and 100,007.68

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Solution

The fourth proportional to 129,546.72, 194,320.12 and 100,007.68 is: 150,011.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,546.72 : 194,320.12 = 100,007.68 : x
  2. Step 2: Convert to fraction form
    129,546.72/194,320.12 = 100,007.68/x
  3. Step 3: Cross multiply
    129,546.72x = 194,320.12 × 100,007.68
  4. Step 4: Simplify right side
    129,546.72x = 19,433,504,378.52
  5. Step 5: Solve for x
    x = 19,433,504,378.52/129,546.72
  6. Step 6: Final answer
    x = 150,011.55

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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.