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Finding the Fourth Proportional to 189,785, 261,880.62 and 104,890.52

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Solution

The fourth proportional to 189,785, 261,880.62 and 104,890.52 is: 144,736.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,785 : 261,880.62 = 104,890.52 : x
  2. Step 2: Convert to fraction form
    189,785/261,880.62 = 104,890.52/x
  3. Step 3: Cross multiply
    189,785x = 261,880.62 × 104,890.52
  4. Step 4: Simplify right side
    189,785x = 27,468,794,409.72
  5. Step 5: Solve for x
    x = 27,468,794,409.72/189,785
  6. Step 6: Final answer
    x = 144,736.38

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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.