Home / 128,451.20-192,695.24-39,711.62

Finding the Fourth Proportional to 128,451.20, 192,695.24 and 39,711.62

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Solution

The fourth proportional to 128,451.20, 192,695.24 and 39,711.62 is: 59,573.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,451.20 : 192,695.24 = 39,711.62 : x
  2. Step 2: Convert to fraction form
    128,451.20/192,695.24 = 39,711.62/x
  3. Step 3: Cross multiply
    128,451.20x = 192,695.24 × 39,711.62
  4. Step 4: Simplify right side
    128,451.20x = 7,652,240,146.69
  5. Step 5: Solve for x
    x = 7,652,240,146.69/128,451.20
  6. Step 6: Final answer
    x = 59,573.13

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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.