Home / 90,131.37-135,078.79-66,327.49

Finding the Fourth Proportional to 90,131.37, 135,078.79 and 66,327.49

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Solution

The fourth proportional to 90,131.37, 135,078.79 and 66,327.49 is: 99,404.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,131.37 : 135,078.79 = 66,327.49 : x
  2. Step 2: Convert to fraction form
    90,131.37/135,078.79 = 66,327.49/x
  3. Step 3: Cross multiply
    90,131.37x = 135,078.79 × 66,327.49
  4. Step 4: Simplify right side
    90,131.37x = 8,959,437,220.33
  5. Step 5: Solve for x
    x = 8,959,437,220.33/90,131.37
  6. Step 6: Final answer
    x = 99,404.21

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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.