Home / 168,021.70-231,714.15-122,627.77

Finding the Fourth Proportional to 168,021.70, 231,714.15 and 122,627.77

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Solution

The fourth proportional to 168,021.70, 231,714.15 and 122,627.77 is: 169,112.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,021.70 : 231,714.15 = 122,627.77 : x
  2. Step 2: Convert to fraction form
    168,021.70/231,714.15 = 122,627.77/x
  3. Step 3: Cross multiply
    168,021.70x = 231,714.15 × 122,627.77
  4. Step 4: Simplify right side
    168,021.70x = 28,414,589,491.95
  5. Step 5: Solve for x
    x = 28,414,589,491.95/168,021.70
  6. Step 6: Final answer
    x = 169,112.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.