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Finding the Fourth Proportional to 188,821.26, 260,575.11 and 103,940.01

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Solution

The fourth proportional to 188,821.26, 260,575.11 and 103,940.01 is: 143,438.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,821.26 : 260,575.11 = 103,940.01 : x
  2. Step 2: Convert to fraction form
    188,821.26/260,575.11 = 103,940.01/x
  3. Step 3: Cross multiply
    188,821.26x = 260,575.11 × 103,940.01
  4. Step 4: Simplify right side
    188,821.26x = 27,084,179,539.15
  5. Step 5: Solve for x
    x = 27,084,179,539.15/188,821.26
  6. Step 6: Final answer
    x = 143,438.19

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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.