Home / 90,255.36-135,235.08-63,912.80

Finding the Fourth Proportional to 90,255.36, 135,235.08 and 63,912.80

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Solution

The fourth proportional to 90,255.36, 135,235.08 and 63,912.80 is: 95,764.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,255.36 : 135,235.08 = 63,912.80 : x
  2. Step 2: Convert to fraction form
    90,255.36/135,235.08 = 63,912.80/x
  3. Step 3: Cross multiply
    90,255.36x = 135,235.08 × 63,912.80
  4. Step 4: Simplify right side
    90,255.36x = 8,643,252,621.02
  5. Step 5: Solve for x
    x = 8,643,252,621.02/90,255.36
  6. Step 6: Final answer
    x = 95,764.42

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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.