Home / 213,383.72-320,123.20-80,265.08

Finding the Fourth Proportional to 213,383.72, 320,123.20 and 80,265.08

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Solution

The fourth proportional to 213,383.72, 320,123.20 and 80,265.08 is: 120,415.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,383.72 : 320,123.20 = 80,265.08 : x
  2. Step 2: Convert to fraction form
    213,383.72/320,123.20 = 80,265.08/x
  3. Step 3: Cross multiply
    213,383.72x = 320,123.20 × 80,265.08
  4. Step 4: Simplify right side
    213,383.72x = 25,694,714,257.86
  5. Step 5: Solve for x
    x = 25,694,714,257.86/213,383.72
  6. Step 6: Final answer
    x = 120,415.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.