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Finding the Fourth Proportional to 189,470.85, 261,469.82 and 104,587.91

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Solution

The fourth proportional to 189,470.85, 261,469.82 and 104,587.91 is: 144,331.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,470.85 : 261,469.82 = 104,587.91 : x
  2. Step 2: Convert to fraction form
    189,470.85/261,469.82 = 104,587.91/x
  3. Step 3: Cross multiply
    189,470.85x = 261,469.82 × 104,587.91
  4. Step 4: Simplify right side
    189,470.85x = 27,346,581,936.51
  5. Step 5: Solve for x
    x = 27,346,581,936.51/189,470.85
  6. Step 6: Final answer
    x = 144,331.34

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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.