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Finding the Fourth Proportional to 188,480.91, 260,141.49 and 111,985.29

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Solution

The fourth proportional to 188,480.91, 260,141.49 and 111,985.29 is: 154,562.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,480.91 : 260,141.49 = 111,985.29 : x
  2. Step 2: Convert to fraction form
    188,480.91/260,141.49 = 111,985.29/x
  3. Step 3: Cross multiply
    188,480.91x = 260,141.49 × 111,985.29
  4. Step 4: Simplify right side
    188,480.91x = 29,132,020,198.68
  5. Step 5: Solve for x
    x = 29,132,020,198.68/188,480.91
  6. Step 6: Final answer
    x = 154,562.18

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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.