Home / 99,824.20-149,736.30-90,638.80

Finding the Fourth Proportional to 99,824.20, 149,736.30 and 90,638.80

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Solution

The fourth proportional to 99,824.20, 149,736.30 and 90,638.80 is: 135,958.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,824.20 : 149,736.30 = 90,638.80 : x
  2. Step 2: Convert to fraction form
    99,824.20/149,736.30 = 90,638.80/x
  3. Step 3: Cross multiply
    99,824.20x = 149,736.30 × 90,638.80
  4. Step 4: Simplify right side
    99,824.20x = 13,571,918,548.44
  5. Step 5: Solve for x
    x = 13,571,918,548.44/99,824.20
  6. Step 6: Final answer
    x = 135,958.20

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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.