Home / 128,535.41-192,812.09-39,777.23

Finding the Fourth Proportional to 128,535.41, 192,812.09 and 39,777.23

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Solution

The fourth proportional to 128,535.41, 192,812.09 and 39,777.23 is: 59,668.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,535.41 : 192,812.09 = 39,777.23 : x
  2. Step 2: Convert to fraction form
    128,535.41/192,812.09 = 39,777.23/x
  3. Step 3: Cross multiply
    128,535.41x = 192,812.09 × 39,777.23
  4. Step 4: Simplify right side
    128,535.41x = 7,669,530,850.71
  5. Step 5: Solve for x
    x = 7,669,530,850.71/128,535.41
  6. Step 6: Final answer
    x = 59,668.62

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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.