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Finding the Fourth Proportional to 189,661.26, 261,737.82 and 104,783.79

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Solution

The fourth proportional to 189,661.26, 261,737.82 and 104,783.79 is: 144,604.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,661.26 : 261,737.82 = 104,783.79 : x
  2. Step 2: Convert to fraction form
    189,661.26/261,737.82 = 104,783.79/x
  3. Step 3: Cross multiply
    189,661.26x = 261,737.82 × 104,783.79
  4. Step 4: Simplify right side
    189,661.26x = 27,425,880,765.94
  5. Step 5: Solve for x
    x = 27,425,880,765.94/189,661.26
  6. Step 6: Final answer
    x = 144,604.55

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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.