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Finding the Fourth Proportional to 188,696.26, 260,400.45 and 103,813.12

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Solution

The fourth proportional to 188,696.26, 260,400.45 and 103,813.12 is: 143,261.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,696.26 : 260,400.45 = 103,813.12 : x
  2. Step 2: Convert to fraction form
    188,696.26/260,400.45 = 103,813.12/x
  3. Step 3: Cross multiply
    188,696.26x = 260,400.45 × 103,813.12
  4. Step 4: Simplify right side
    188,696.26x = 27,032,983,163.90
  5. Step 5: Solve for x
    x = 27,032,983,163.90/188,696.26
  6. Step 6: Final answer
    x = 143,261.89

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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.