Home / 189,201.52-261,099.86-104,321.60

Finding the Fourth Proportional to 189,201.52, 261,099.86 and 104,321.60

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Solution

The fourth proportional to 189,201.52, 261,099.86 and 104,321.60 is: 143,964.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,201.52 : 261,099.86 = 104,321.60 : x
  2. Step 2: Convert to fraction form
    189,201.52/261,099.86 = 104,321.60/x
  3. Step 3: Cross multiply
    189,201.52x = 261,099.86 × 104,321.60
  4. Step 4: Simplify right side
    189,201.52x = 27,238,355,154.98
  5. Step 5: Solve for x
    x = 27,238,355,154.98/189,201.52
  6. Step 6: Final answer
    x = 143,964.78

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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.