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Finding the Fourth Proportional to 189,660.76, 261,737.13 and 104,783.29

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Solution

The fourth proportional to 189,660.76, 261,737.13 and 104,783.29 is: 144,603.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,660.76 : 261,737.13 = 104,783.29 : x
  2. Step 2: Convert to fraction form
    189,660.76/261,737.13 = 104,783.29/x
  3. Step 3: Cross multiply
    189,660.76x = 261,737.13 × 104,783.29
  4. Step 4: Simplify right side
    189,660.76x = 27,425,677,596.56
  5. Step 5: Solve for x
    x = 27,425,677,596.56/189,660.76
  6. Step 6: Final answer
    x = 144,603.86

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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.