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Finding the Fourth Proportional to 130,025.40, 194,819.40 and 111,217.20

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Solution

The fourth proportional to 130,025.40, 194,819.40 and 111,217.20 is: 166,638.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,025.40 : 194,819.40 = 111,217.20 : x
  2. Step 2: Convert to fraction form
    130,025.40/194,819.40 = 111,217.20/x
  3. Step 3: Cross multiply
    130,025.40x = 194,819.40 × 111,217.20
  4. Step 4: Simplify right side
    130,025.40x = 21,667,268,173.68
  5. Step 5: Solve for x
    x = 21,667,268,173.68/130,025.40
  6. Step 6: Final answer
    x = 166,638.73

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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.