Home / 155,218.34-214,163.94-90,650.96

Finding the Fourth Proportional to 155,218.34, 214,163.94 and 90,650.96

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Solution

The fourth proportional to 155,218.34, 214,163.94 and 90,650.96 is: 125,076.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,218.34 : 214,163.94 = 90,650.96 : x
  2. Step 2: Convert to fraction form
    155,218.34/214,163.94 = 90,650.96/x
  3. Step 3: Cross multiply
    155,218.34x = 214,163.94 × 90,650.96
  4. Step 4: Simplify right side
    155,218.34x = 19,414,166,758.38
  5. Step 5: Solve for x
    x = 19,414,166,758.38/155,218.34
  6. Step 6: Final answer
    x = 125,076.50

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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.