Home / 128,186.28-192,311.14-53,283.96

Finding the Fourth Proportional to 128,186.28, 192,311.14 and 53,283.96

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Solution

The fourth proportional to 128,186.28, 192,311.14 and 53,283.96 is: 79,939.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,186.28 : 192,311.14 = 53,283.96 : x
  2. Step 2: Convert to fraction form
    128,186.28/192,311.14 = 53,283.96/x
  3. Step 3: Cross multiply
    128,186.28x = 192,311.14 × 53,283.96
  4. Step 4: Simplify right side
    128,186.28x = 10,247,099,091.31
  5. Step 5: Solve for x
    x = 10,247,099,091.31/128,186.28
  6. Step 6: Final answer
    x = 79,939.13

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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.