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Finding the Fourth Proportional to 189,121.20, 283,746.60 and 84,015.60

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Solution

The fourth proportional to 189,121.20, 283,746.60 and 84,015.60 is: 126,052.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,121.20 : 283,746.60 = 84,015.60 : x
  2. Step 2: Convert to fraction form
    189,121.20/283,746.60 = 84,015.60/x
  3. Step 3: Cross multiply
    189,121.20x = 283,746.60 × 84,015.60
  4. Step 4: Simplify right side
    189,121.20x = 23,839,140,846.96
  5. Step 5: Solve for x
    x = 23,839,140,846.96/189,121.20
  6. Step 6: Final answer
    x = 126,052.19

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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.