Home / 129,039.05-193,529.55-54,243.65

Finding the Fourth Proportional to 129,039.05, 193,529.55 and 54,243.65

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Solution

The fourth proportional to 129,039.05, 193,529.55 and 54,243.65 is: 81,353.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,039.05 : 193,529.55 = 54,243.65 : x
  2. Step 2: Convert to fraction form
    129,039.05/193,529.55 = 54,243.65/x
  3. Step 3: Cross multiply
    129,039.05x = 193,529.55 × 54,243.65
  4. Step 4: Simplify right side
    129,039.05x = 10,497,749,174.86
  5. Step 5: Solve for x
    x = 10,497,749,174.86/129,039.05
  6. Step 6: Final answer
    x = 81,353.27

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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.