Home / 149,979.60-225,115.20-90,930.60

Finding the Fourth Proportional to 149,979.60, 225,115.20 and 90,930.60

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Solution

The fourth proportional to 149,979.60, 225,115.20 and 90,930.60 is: 136,484.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,979.60 : 225,115.20 = 90,930.60 : x
  2. Step 2: Convert to fraction form
    149,979.60/225,115.20 = 90,930.60/x
  3. Step 3: Cross multiply
    149,979.60x = 225,115.20 × 90,930.60
  4. Step 4: Simplify right side
    149,979.60x = 20,469,860,205.12
  5. Step 5: Solve for x
    x = 20,469,860,205.12/149,979.60
  6. Step 6: Final answer
    x = 136,484.30

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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.