Home / 128,106.91-192,185.07-39,344.68

Finding the Fourth Proportional to 128,106.91, 192,185.07 and 39,344.68

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Solution

The fourth proportional to 128,106.91, 192,185.07 and 39,344.68 is: 59,024.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,106.91 : 192,185.07 = 39,344.68 : x
  2. Step 2: Convert to fraction form
    128,106.91/192,185.07 = 39,344.68/x
  3. Step 3: Cross multiply
    128,106.91x = 192,185.07 × 39,344.68
  4. Step 4: Simplify right side
    128,106.91x = 7,561,460,079.93
  5. Step 5: Solve for x
    x = 7,561,460,079.93/128,106.91
  6. Step 6: Final answer
    x = 59,024.61

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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.