Home / 203,156.10-280,216.67-139,383.18

Finding the Fourth Proportional to 203,156.10, 280,216.67 and 139,383.18

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Solution

The fourth proportional to 203,156.10, 280,216.67 and 139,383.18 is: 192,253.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,156.10 : 280,216.67 = 139,383.18 : x
  2. Step 2: Convert to fraction form
    203,156.10/280,216.67 = 139,383.18/x
  3. Step 3: Cross multiply
    203,156.10x = 280,216.67 × 139,383.18
  4. Step 4: Simplify right side
    203,156.10x = 39,057,489,856.69
  5. Step 5: Solve for x
    x = 39,057,489,856.69/203,156.10
  6. Step 6: Final answer
    x = 192,253.59

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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.