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Finding the Fourth Proportional to 188,363.88, 259,942.25 and 103,486.41

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Solution

The fourth proportional to 188,363.88, 259,942.25 and 103,486.41 is: 142,811.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,363.88 : 259,942.25 = 103,486.41 : x
  2. Step 2: Convert to fraction form
    188,363.88/259,942.25 = 103,486.41/x
  3. Step 3: Cross multiply
    188,363.88x = 259,942.25 × 103,486.41
  4. Step 4: Simplify right side
    188,363.88x = 26,900,490,259.82
  5. Step 5: Solve for x
    x = 26,900,490,259.82/188,363.88
  6. Step 6: Final answer
    x = 142,811.30

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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.