Home / 128,914.12-193,380.50-53,958.88

Finding the Fourth Proportional to 128,914.12, 193,380.50 and 53,958.88

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Solution

The fourth proportional to 128,914.12, 193,380.50 and 53,958.88 is: 80,942.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,914.12 : 193,380.50 = 53,958.88 : x
  2. Step 2: Convert to fraction form
    128,914.12/193,380.50 = 53,958.88/x
  3. Step 3: Cross multiply
    128,914.12x = 193,380.50 × 53,958.88
  4. Step 4: Simplify right side
    128,914.12x = 10,434,595,193.84
  5. Step 5: Solve for x
    x = 10,434,595,193.84/128,914.12
  6. Step 6: Final answer
    x = 80,942.22

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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.