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Finding the Fourth Proportional to 188,616, 260,290.08 and 103,738.56

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Solution

The fourth proportional to 188,616, 260,290.08 and 103,738.56 is: 143,159.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,616 : 260,290.08 = 103,738.56 : x
  2. Step 2: Convert to fraction form
    188,616/260,290.08 = 103,738.56/x
  3. Step 3: Cross multiply
    188,616x = 260,290.08 × 103,738.56
  4. Step 4: Simplify right side
    188,616x = 27,002,118,081.48
  5. Step 5: Solve for x
    x = 27,002,118,081.48/188,616
  6. Step 6: Final answer
    x = 143,159.21

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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.