Home / 128,412.18-192,544.20-39,641.94

Finding the Fourth Proportional to 128,412.18, 192,544.20 and 39,641.94

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Solution

The fourth proportional to 128,412.18, 192,544.20 and 39,641.94 is: 59,440.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,412.18 : 192,544.20 = 39,641.94 : x
  2. Step 2: Convert to fraction form
    128,412.18/192,544.20 = 39,641.94/x
  3. Step 3: Cross multiply
    128,412.18x = 192,544.20 × 39,641.94
  4. Step 4: Simplify right side
    128,412.18x = 7,632,825,623.75
  5. Step 5: Solve for x
    x = 7,632,825,623.75/128,412.18
  6. Step 6: Final answer
    x = 59,440.04

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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.