Home / 128,134.20-192,219.68-39,395.16

Finding the Fourth Proportional to 128,134.20, 192,219.68 and 39,395.16

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Solution

The fourth proportional to 128,134.20, 192,219.68 and 39,395.16 is: 59,098.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,134.20 : 192,219.68 = 39,395.16 : x
  2. Step 2: Convert to fraction form
    128,134.20/192,219.68 = 39,395.16/x
  3. Step 3: Cross multiply
    128,134.20x = 192,219.68 × 39,395.16
  4. Step 4: Simplify right side
    128,134.20x = 7,572,525,147.24
  5. Step 5: Solve for x
    x = 7,572,525,147.24/128,134.20
  6. Step 6: Final answer
    x = 59,098.39

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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.