Home / 128,764.28-193,158.96-39,993.92

Finding the Fourth Proportional to 128,764.28, 193,158.96 and 39,993.92

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Solution

The fourth proportional to 128,764.28, 193,158.96 and 39,993.92 is: 59,994.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,764.28 : 193,158.96 = 39,993.92 : x
  2. Step 2: Convert to fraction form
    128,764.28/193,158.96 = 39,993.92/x
  3. Step 3: Cross multiply
    128,764.28x = 193,158.96 × 39,993.92
  4. Step 4: Simplify right side
    128,764.28x = 7,725,183,993.52
  5. Step 5: Solve for x
    x = 7,725,183,993.52/128,764.28
  6. Step 6: Final answer
    x = 59,994.77

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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.