Home / 192,181.21-288,021.78-78,196.19

Finding the Fourth Proportional to 192,181.21, 288,021.78 and 78,196.19

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Solution

The fourth proportional to 192,181.21, 288,021.78 and 78,196.19 is: 117,192.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,181.21 : 288,021.78 = 78,196.19 : x
  2. Step 2: Convert to fraction form
    192,181.21/288,021.78 = 78,196.19/x
  3. Step 3: Cross multiply
    192,181.21x = 288,021.78 × 78,196.19
  4. Step 4: Simplify right side
    192,181.21x = 22,522,204,197.42
  5. Step 5: Solve for x
    x = 22,522,204,197.42/192,181.21
  6. Step 6: Final answer
    x = 117,192.54

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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.