Home / 128,120.94-192,072.06-90,562.86

Finding the Fourth Proportional to 128,120.94, 192,072.06 and 90,562.86

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Solution

The fourth proportional to 128,120.94, 192,072.06 and 90,562.86 is: 135,767.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,120.94 : 192,072.06 = 90,562.86 : x
  2. Step 2: Convert to fraction form
    128,120.94/192,072.06 = 90,562.86/x
  3. Step 3: Cross multiply
    128,120.94x = 192,072.06 × 90,562.86
  4. Step 4: Simplify right side
    128,120.94x = 17,394,595,079.69
  5. Step 5: Solve for x
    x = 17,394,595,079.69/128,120.94
  6. Step 6: Final answer
    x = 135,767.00

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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.