Home / 128,186.12-192,242.82-53,213.60

Finding the Fourth Proportional to 128,186.12, 192,242.82 and 53,213.60

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Solution

The fourth proportional to 128,186.12, 192,242.82 and 53,213.60 is: 79,805.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,186.12 : 192,242.82 = 53,213.60 : x
  2. Step 2: Convert to fraction form
    128,186.12/192,242.82 = 53,213.60/x
  3. Step 3: Cross multiply
    128,186.12x = 192,242.82 × 53,213.60
  4. Step 4: Simplify right side
    128,186.12x = 10,229,932,526.35
  5. Step 5: Solve for x
    x = 10,229,932,526.35/128,186.12
  6. Step 6: Final answer
    x = 79,805.31

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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.