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Finding the Fourth Proportional to 189,081.79, 260,920.50 and 104,198.83

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Solution

The fourth proportional to 189,081.79, 260,920.50 and 104,198.83 is: 143,787.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,081.79 : 260,920.50 = 104,198.83 : x
  2. Step 2: Convert to fraction form
    189,081.79/260,920.50 = 104,198.83/x
  3. Step 3: Cross multiply
    189,081.79x = 260,920.50 × 104,198.83
  4. Step 4: Simplify right side
    189,081.79x = 27,187,610,823.02
  5. Step 5: Solve for x
    x = 27,187,610,823.02/189,081.79
  6. Step 6: Final answer
    x = 143,787.57

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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.