Home / 155,183.31-214,144.83-87,202.98

Finding the Fourth Proportional to 155,183.31, 214,144.83 and 87,202.98

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Solution

The fourth proportional to 155,183.31, 214,144.83 and 87,202.98 is: 120,335.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,183.31 : 214,144.83 = 87,202.98 : x
  2. Step 2: Convert to fraction form
    155,183.31/214,144.83 = 87,202.98/x
  3. Step 3: Cross multiply
    155,183.31x = 214,144.83 × 87,202.98
  4. Step 4: Simplify right side
    155,183.31x = 18,674,067,327.59
  5. Step 5: Solve for x
    x = 18,674,067,327.59/155,183.31
  6. Step 6: Final answer
    x = 120,335.54

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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.