Home / 119,847.12-179,630.72-90,169.68

Finding the Fourth Proportional to 119,847.12, 179,630.72 and 90,169.68

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Solution

The fourth proportional to 119,847.12, 179,630.72 and 90,169.68 is: 135,149.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,847.12 : 179,630.72 = 90,169.68 : x
  2. Step 2: Convert to fraction form
    119,847.12/179,630.72 = 90,169.68/x
  3. Step 3: Cross multiply
    119,847.12x = 179,630.72 × 90,169.68
  4. Step 4: Simplify right side
    119,847.12x = 16,197,244,540.57
  5. Step 5: Solve for x
    x = 16,197,244,540.57/119,847.12
  6. Step 6: Final answer
    x = 135,149.22

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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.