Home / 128,022.40-192,033.60-107,027.20

Finding the Fourth Proportional to 128,022.40, 192,033.60 and 107,027.20

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Solution

The fourth proportional to 128,022.40, 192,033.60 and 107,027.20 is: 160,540.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,022.40 : 192,033.60 = 107,027.20 : x
  2. Step 2: Convert to fraction form
    128,022.40/192,033.60 = 107,027.20/x
  3. Step 3: Cross multiply
    128,022.40x = 192,033.60 × 107,027.20
  4. Step 4: Simplify right side
    128,022.40x = 20,552,818,513.92
  5. Step 5: Solve for x
    x = 20,552,818,513.92/128,022.40
  6. Step 6: Final answer
    x = 160,540.80

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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.