Home / 128,367.45-192,569.40-39,604.41

Finding the Fourth Proportional to 128,367.45, 192,569.40 and 39,604.41

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Solution

The fourth proportional to 128,367.45, 192,569.40 and 39,604.41 is: 59,412.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,367.45 : 192,569.40 = 39,604.41 : x
  2. Step 2: Convert to fraction form
    128,367.45/192,569.40 = 39,604.41/x
  3. Step 3: Cross multiply
    128,367.45x = 192,569.40 × 39,604.41
  4. Step 4: Simplify right side
    128,367.45x = 7,626,597,471.05
  5. Step 5: Solve for x
    x = 7,626,597,471.05/128,367.45
  6. Step 6: Final answer
    x = 59,412.24

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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.