Home / 203,190.85-280,391-112,541.41

Finding the Fourth Proportional to 203,190.85, 280,391 and 112,541.41

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Solution

The fourth proportional to 203,190.85, 280,391 and 112,541.41 is: 155,300.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,190.85 : 280,391 = 112,541.41 : x
  2. Step 2: Convert to fraction form
    203,190.85/280,391 = 112,541.41/x
  3. Step 3: Cross multiply
    203,190.85x = 280,391 × 112,541.41
  4. Step 4: Simplify right side
    203,190.85x = 31,555,598,491.31
  5. Step 5: Solve for x
    x = 31,555,598,491.31/203,190.85
  6. Step 6: Final answer
    x = 155,300.29

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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.