Home / 128,883.78-193,247.91-57,793.50

Finding the Fourth Proportional to 128,883.78, 193,247.91 and 57,793.50

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Solution

The fourth proportional to 128,883.78, 193,247.91 and 57,793.50 is: 86,655.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,883.78 : 193,247.91 = 57,793.50 : x
  2. Step 2: Convert to fraction form
    128,883.78/193,247.91 = 57,793.50/x
  3. Step 3: Cross multiply
    128,883.78x = 193,247.91 × 57,793.50
  4. Step 4: Simplify right side
    128,883.78x = 11,168,473,086.59
  5. Step 5: Solve for x
    x = 11,168,473,086.59/128,883.78
  6. Step 6: Final answer
    x = 86,655.38

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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.