Home / 128,720.97-193,081.49-35,226.72

Finding the Fourth Proportional to 128,720.97, 193,081.49 and 35,226.72

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Solution

The fourth proportional to 128,720.97, 193,081.49 and 35,226.72 is: 52,840.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,720.97 : 193,081.49 = 35,226.72 : x
  2. Step 2: Convert to fraction form
    128,720.97/193,081.49 = 35,226.72/x
  3. Step 3: Cross multiply
    128,720.97x = 193,081.49 × 35,226.72
  4. Step 4: Simplify right side
    128,720.97x = 6,801,627,409.28
  5. Step 5: Solve for x
    x = 6,801,627,409.28/128,720.97
  6. Step 6: Final answer
    x = 52,840.09

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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.