Home / 128,349.66-192,555.18-38,399.94

Finding the Fourth Proportional to 128,349.66, 192,555.18 and 38,399.94

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Solution

The fourth proportional to 128,349.66, 192,555.18 and 38,399.94 is: 57,609.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,349.66 : 192,555.18 = 38,399.94 : x
  2. Step 2: Convert to fraction form
    128,349.66/192,555.18 = 38,399.94/x
  3. Step 3: Cross multiply
    128,349.66x = 192,555.18 × 38,399.94
  4. Step 4: Simplify right side
    128,349.66x = 7,394,107,358.69
  5. Step 5: Solve for x
    x = 7,394,107,358.69/128,349.66
  6. Step 6: Final answer
    x = 57,609.09

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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.