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Finding the Fourth Proportional to 188,759.81, 260,489.05 and 103,876.88

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Solution

The fourth proportional to 188,759.81, 260,489.05 and 103,876.88 is: 143,350.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,759.81 : 260,489.05 = 103,876.88 : x
  2. Step 2: Convert to fraction form
    188,759.81/260,489.05 = 103,876.88/x
  3. Step 3: Cross multiply
    188,759.81x = 260,489.05 × 103,876.88
  4. Step 4: Simplify right side
    188,759.81x = 27,058,788,615.56
  5. Step 5: Solve for x
    x = 27,058,788,615.56/188,759.81
  6. Step 6: Final answer
    x = 143,350.37

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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.