Home / 189,285.20-261,221.28-104,407.64

Finding the Fourth Proportional to 189,285.20, 261,221.28 and 104,407.64

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Solution

The fourth proportional to 189,285.20, 261,221.28 and 104,407.64 is: 144,086.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,285.20 : 261,221.28 = 104,407.64 : x
  2. Step 2: Convert to fraction form
    189,285.20/261,221.28 = 104,407.64/x
  3. Step 3: Cross multiply
    189,285.20x = 261,221.28 × 104,407.64
  4. Step 4: Simplify right side
    189,285.20x = 27,273,497,362.58
  5. Step 5: Solve for x
    x = 27,273,497,362.58/189,285.20
  6. Step 6: Final answer
    x = 144,086.79

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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.