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Finding the Fourth Proportional to 188,399.95, 259,813.44 and 123,755.47

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Solution

The fourth proportional to 188,399.95, 259,813.44 and 123,755.47 is: 170,665.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,399.95 : 259,813.44 = 123,755.47 : x
  2. Step 2: Convert to fraction form
    188,399.95/259,813.44 = 123,755.47/x
  3. Step 3: Cross multiply
    188,399.95x = 259,813.44 × 123,755.47
  4. Step 4: Simplify right side
    188,399.95x = 32,153,333,729.98
  5. Step 5: Solve for x
    x = 32,153,333,729.98/188,399.95
  6. Step 6: Final answer
    x = 170,665.30

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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.