Home / 190,861.20-286,291.80-120,819.60

Finding the Fourth Proportional to 190,861.20, 286,291.80 and 120,819.60

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Solution

The fourth proportional to 190,861.20, 286,291.80 and 120,819.60 is: 181,229.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,861.20 : 286,291.80 = 120,819.60 : x
  2. Step 2: Convert to fraction form
    190,861.20/286,291.80 = 120,819.60/x
  3. Step 3: Cross multiply
    190,861.20x = 286,291.80 × 120,819.60
  4. Step 4: Simplify right side
    190,861.20x = 34,589,660,759.28
  5. Step 5: Solve for x
    x = 34,589,660,759.28/190,861.20
  6. Step 6: Final answer
    x = 181,229.40

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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.