Home / 128,037.80-192,143.10-83,556.20

Finding the Fourth Proportional to 128,037.80, 192,143.10 and 83,556.20

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Solution

The fourth proportional to 128,037.80, 192,143.10 and 83,556.20 is: 125,390.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,037.80 : 192,143.10 = 83,556.20 : x
  2. Step 2: Convert to fraction form
    128,037.80/192,143.10 = 83,556.20/x
  3. Step 3: Cross multiply
    128,037.80x = 192,143.10 × 83,556.20
  4. Step 4: Simplify right side
    128,037.80x = 16,054,747,292.22
  5. Step 5: Solve for x
    x = 16,054,747,292.22/128,037.80
  6. Step 6: Final answer
    x = 125,390.68

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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.