Home / 189,198.02-261,131.10-108,680.78

Finding the Fourth Proportional to 189,198.02, 261,131.10 and 108,680.78

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Solution

The fourth proportional to 189,198.02, 261,131.10 and 108,680.78 is: 150,001.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,198.02 : 261,131.10 = 108,680.78 : x
  2. Step 2: Convert to fraction form
    189,198.02/261,131.10 = 108,680.78/x
  3. Step 3: Cross multiply
    189,198.02x = 261,131.10 × 108,680.78
  4. Step 4: Simplify right side
    189,198.02x = 28,379,931,630.26
  5. Step 5: Solve for x
    x = 28,379,931,630.26/189,198.02
  6. Step 6: Final answer
    x = 150,001.21

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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.