Home / 128,350.19-192,530.75-39,601.73

Finding the Fourth Proportional to 128,350.19, 192,530.75 and 39,601.73

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Solution

The fourth proportional to 128,350.19, 192,530.75 and 39,601.73 is: 59,404.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,350.19 : 192,530.75 = 39,601.73 : x
  2. Step 2: Convert to fraction form
    128,350.19/192,530.75 = 39,601.73/x
  3. Step 3: Cross multiply
    128,350.19x = 192,530.75 × 39,601.73
  4. Step 4: Simplify right side
    128,350.19x = 7,624,549,617.54
  5. Step 5: Solve for x
    x = 7,624,549,617.54/128,350.19
  6. Step 6: Final answer
    x = 59,404.27

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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.