Home / 128,154.12-192,236.40-43,972.16

Finding the Fourth Proportional to 128,154.12, 192,236.40 and 43,972.16

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Solution

The fourth proportional to 128,154.12, 192,236.40 and 43,972.16 is: 65,960.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,154.12 : 192,236.40 = 43,972.16 : x
  2. Step 2: Convert to fraction form
    128,154.12/192,236.40 = 43,972.16/x
  3. Step 3: Cross multiply
    128,154.12x = 192,236.40 × 43,972.16
  4. Step 4: Simplify right side
    128,154.12x = 8,453,049,738.62
  5. Step 5: Solve for x
    x = 8,453,049,738.62/128,154.12
  6. Step 6: Final answer
    x = 65,960.03

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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.