Home / 215,865.54-297,906.30-120,372.12

Finding the Fourth Proportional to 215,865.54, 297,906.30 and 120,372.12

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Solution

The fourth proportional to 215,865.54, 297,906.30 and 120,372.12 is: 166,120.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,865.54 : 297,906.30 = 120,372.12 : x
  2. Step 2: Convert to fraction form
    215,865.54/297,906.30 = 120,372.12/x
  3. Step 3: Cross multiply
    215,865.54x = 297,906.30 × 120,372.12
  4. Step 4: Simplify right side
    215,865.54x = 35,859,612,892.36
  5. Step 5: Solve for x
    x = 35,859,612,892.36/215,865.54
  6. Step 6: Final answer
    x = 166,120.14

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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.