Home / 128,511.40-192,767.10-114,514.60

Finding the Fourth Proportional to 128,511.40, 192,767.10 and 114,514.60

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Solution

The fourth proportional to 128,511.40, 192,767.10 and 114,514.60 is: 171,771.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,511.40 : 192,767.10 = 114,514.60 : x
  2. Step 2: Convert to fraction form
    128,511.40/192,767.10 = 114,514.60/x
  3. Step 3: Cross multiply
    128,511.40x = 192,767.10 × 114,514.60
  4. Step 4: Simplify right side
    128,511.40x = 22,074,647,349.66
  5. Step 5: Solve for x
    x = 22,074,647,349.66/128,511.40
  6. Step 6: Final answer
    x = 171,771.90

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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.