Home / 128,584.08-192,906.90-53,662.56

Finding the Fourth Proportional to 128,584.08, 192,906.90 and 53,662.56

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Solution

The fourth proportional to 128,584.08, 192,906.90 and 53,662.56 is: 80,506.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,584.08 : 192,906.90 = 53,662.56 : x
  2. Step 2: Convert to fraction form
    128,584.08/192,906.90 = 53,662.56/x
  3. Step 3: Cross multiply
    128,584.08x = 192,906.90 × 53,662.56
  4. Step 4: Simplify right side
    128,584.08x = 10,351,878,095.66
  5. Step 5: Solve for x
    x = 10,351,878,095.66/128,584.08
  6. Step 6: Final answer
    x = 80,506.69

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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.