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Finding the Fourth Proportional to 189,287.37, 261,216.09 and 108,720.12

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Solution

The fourth proportional to 189,287.37, 261,216.09 and 108,720.12 is: 150,033.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,287.37 : 261,216.09 = 108,720.12 : x
  2. Step 2: Convert to fraction form
    189,287.37/261,216.09 = 108,720.12/x
  3. Step 3: Cross multiply
    189,287.37x = 261,216.09 × 108,720.12
  4. Step 4: Simplify right side
    189,287.37x = 28,399,444,650.73
  5. Step 5: Solve for x
    x = 28,399,444,650.73/189,287.37
  6. Step 6: Final answer
    x = 150,033.49

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.