Home / 128,914.62-193,381.25-53,959.38

Finding the Fourth Proportional to 128,914.62, 193,381.25 and 53,959.38

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Solution

The fourth proportional to 128,914.62, 193,381.25 and 53,959.38 is: 80,942.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,914.62 : 193,381.25 = 53,959.38 : x
  2. Step 2: Convert to fraction form
    128,914.62/193,381.25 = 53,959.38/x
  3. Step 3: Cross multiply
    128,914.62x = 193,381.25 × 53,959.38
  4. Step 4: Simplify right side
    128,914.62x = 10,434,732,353.63
  5. Step 5: Solve for x
    x = 10,434,732,353.63/128,914.62
  6. Step 6: Final answer
    x = 80,942.97

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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.