Home / 128,169.12-192,247.86-43,936.76

Finding the Fourth Proportional to 128,169.12, 192,247.86 and 43,936.76

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Solution

The fourth proportional to 128,169.12, 192,247.86 and 43,936.76 is: 65,903.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,169.12 : 192,247.86 = 43,936.76 : x
  2. Step 2: Convert to fraction form
    128,169.12/192,247.86 = 43,936.76/x
  3. Step 3: Cross multiply
    128,169.12x = 192,247.86 × 43,936.76
  4. Step 4: Simplify right side
    128,169.12x = 8,446,748,085.33
  5. Step 5: Solve for x
    x = 8,446,748,085.33/128,169.12
  6. Step 6: Final answer
    x = 65,903.14

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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.