Home / 213,840.60-320,512.86-80,635.56

Finding the Fourth Proportional to 213,840.60, 320,512.86 and 80,635.56

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Solution

The fourth proportional to 213,840.60, 320,512.86 and 80,635.56 is: 120,859.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,840.60 : 320,512.86 = 80,635.56 : x
  2. Step 2: Convert to fraction form
    213,840.60/320,512.86 = 80,635.56/x
  3. Step 3: Cross multiply
    213,840.60x = 320,512.86 × 80,635.56
  4. Step 4: Simplify right side
    213,840.60x = 25,844,733,953.30
  5. Step 5: Solve for x
    x = 25,844,733,953.30/213,840.60
  6. Step 6: Final answer
    x = 120,859.81

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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.