Home / 128,185.62-192,246.03-38,207.58

Finding the Fourth Proportional to 128,185.62, 192,246.03 and 38,207.58

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Solution

The fourth proportional to 128,185.62, 192,246.03 and 38,207.58 is: 57,301.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,185.62 : 192,246.03 = 38,207.58 : x
  2. Step 2: Convert to fraction form
    128,185.62/192,246.03 = 38,207.58/x
  3. Step 3: Cross multiply
    128,185.62x = 192,246.03 × 38,207.58
  4. Step 4: Simplify right side
    128,185.62x = 7,345,255,570.91
  5. Step 5: Solve for x
    x = 7,345,255,570.91/128,185.62
  6. Step 6: Final answer
    x = 57,301.71

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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.