Home / 128,512.08-192,855.33-45,406.08

Finding the Fourth Proportional to 128,512.08, 192,855.33 and 45,406.08

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Solution

The fourth proportional to 128,512.08, 192,855.33 and 45,406.08 is: 68,139.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,512.08 : 192,855.33 = 45,406.08 : x
  2. Step 2: Convert to fraction form
    128,512.08/192,855.33 = 45,406.08/x
  3. Step 3: Cross multiply
    128,512.08x = 192,855.33 × 45,406.08
  4. Step 4: Simplify right side
    128,512.08x = 8,756,804,542.41
  5. Step 5: Solve for x
    x = 8,756,804,542.41/128,512.08
  6. Step 6: Final answer
    x = 68,139.93

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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.