Home / 128,010.38-192,015.67-43,771.18

Finding the Fourth Proportional to 128,010.38, 192,015.67 and 43,771.18

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Solution

The fourth proportional to 128,010.38, 192,015.67 and 43,771.18 is: 65,656.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,010.38 : 192,015.67 = 43,771.18 : x
  2. Step 2: Convert to fraction form
    128,010.38/192,015.67 = 43,771.18/x
  3. Step 3: Cross multiply
    128,010.38x = 192,015.67 × 43,771.18
  4. Step 4: Simplify right side
    128,010.38x = 8,404,752,454.39
  5. Step 5: Solve for x
    x = 8,404,752,454.39/128,010.38
  6. Step 6: Final answer
    x = 65,656.80

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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.