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Finding the Fourth Proportional to 188,362.88, 259,940.87 and 103,485.41

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Solution

The fourth proportional to 188,362.88, 259,940.87 and 103,485.41 is: 142,809.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,362.88 : 259,940.87 = 103,485.41 : x
  2. Step 2: Convert to fraction form
    188,362.88/259,940.87 = 103,485.41/x
  3. Step 3: Cross multiply
    188,362.88x = 259,940.87 × 103,485.41
  4. Step 4: Simplify right side
    188,362.88x = 26,900,086,466.72
  5. Step 5: Solve for x
    x = 26,900,086,466.72/188,362.88
  6. Step 6: Final answer
    x = 142,809.92

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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.