Home / 128,979.15-193,469.94-39,022.58

Finding the Fourth Proportional to 128,979.15, 193,469.94 and 39,022.58

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Solution

The fourth proportional to 128,979.15, 193,469.94 and 39,022.58 is: 58,534.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,979.15 : 193,469.94 = 39,022.58 : x
  2. Step 2: Convert to fraction form
    128,979.15/193,469.94 = 39,022.58/x
  3. Step 3: Cross multiply
    128,979.15x = 193,469.94 × 39,022.58
  4. Step 4: Simplify right side
    128,979.15x = 7,549,695,243.90
  5. Step 5: Solve for x
    x = 7,549,695,243.90/128,979.15
  6. Step 6: Final answer
    x = 58,534.23

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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.