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Finding the Fourth Proportional to 188,891.25, 260,662.21 and 108,262.63

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Solution

The fourth proportional to 188,891.25, 260,662.21 and 108,262.63 is: 149,398.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,891.25 : 260,662.21 = 108,262.63 : x
  2. Step 2: Convert to fraction form
    188,891.25/260,662.21 = 108,262.63/x
  3. Step 3: Cross multiply
    188,891.25x = 260,662.21 × 108,262.63
  4. Step 4: Simplify right side
    188,891.25x = 28,219,976,396.21
  5. Step 5: Solve for x
    x = 28,219,976,396.21/188,891.25
  6. Step 6: Final answer
    x = 149,398.01

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1.5x scale

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.