Home / 203,219.13-280,385.12-117,171.35

Finding the Fourth Proportional to 203,219.13, 280,385.12 and 117,171.35

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Solution

The fourth proportional to 203,219.13, 280,385.12 and 117,171.35 is: 161,663.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,219.13 : 280,385.12 = 117,171.35 : x
  2. Step 2: Convert to fraction form
    203,219.13/280,385.12 = 117,171.35/x
  3. Step 3: Cross multiply
    203,219.13x = 280,385.12 × 117,171.35
  4. Step 4: Simplify right side
    203,219.13x = 32,853,101,921.31
  5. Step 5: Solve for x
    x = 32,853,101,921.31/203,219.13
  6. Step 6: Final answer
    x = 161,663.43

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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.