Home / 129,678.72-194,440.20-50,698.84

Finding the Fourth Proportional to 129,678.72, 194,440.20 and 50,698.84

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Solution

The fourth proportional to 129,678.72, 194,440.20 and 50,698.84 is: 76,017.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,678.72 : 194,440.20 = 50,698.84 : x
  2. Step 2: Convert to fraction form
    129,678.72/194,440.20 = 50,698.84/x
  3. Step 3: Cross multiply
    129,678.72x = 194,440.20 × 50,698.84
  4. Step 4: Simplify right side
    129,678.72x = 9,857,892,589.37
  5. Step 5: Solve for x
    x = 9,857,892,589.37/129,678.72
  6. Step 6: Final answer
    x = 76,017.81

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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.