Home / 128,321.03-192,514.32-53,416.28

Finding the Fourth Proportional to 128,321.03, 192,514.32 and 53,416.28

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Solution

The fourth proportional to 128,321.03, 192,514.32 and 53,416.28 is: 80,138.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,321.03 : 192,514.32 = 53,416.28 : x
  2. Step 2: Convert to fraction form
    128,321.03/192,514.32 = 53,416.28/x
  3. Step 3: Cross multiply
    128,321.03x = 192,514.32 × 53,416.28
  4. Step 4: Simplify right side
    128,321.03x = 10,283,399,302.42
  5. Step 5: Solve for x
    x = 10,283,399,302.42/128,321.03
  6. Step 6: Final answer
    x = 80,138.07

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1.5x scale

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.