Home / 128,635.11-193,022.37-53,761.86

Finding the Fourth Proportional to 128,635.11, 193,022.37 and 53,761.86

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Solution

The fourth proportional to 128,635.11, 193,022.37 and 53,761.86 is: 80,671.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,635.11 : 193,022.37 = 53,761.86 : x
  2. Step 2: Convert to fraction form
    128,635.11/193,022.37 = 53,761.86/x
  3. Step 3: Cross multiply
    128,635.11x = 193,022.37 × 53,761.86
  4. Step 4: Simplify right side
    128,635.11x = 10,377,241,632.81
  5. Step 5: Solve for x
    x = 10,377,241,632.81/128,635.11
  6. Step 6: Final answer
    x = 80,671.92

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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.