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Finding the Fourth Proportional to 188,363.75, 259,942.08 and 103,486.28

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Solution

The fourth proportional to 188,363.75, 259,942.08 and 103,486.28 is: 142,811.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,363.75 : 259,942.08 = 103,486.28 : x
  2. Step 2: Convert to fraction form
    188,363.75/259,942.08 = 103,486.28/x
  3. Step 3: Cross multiply
    188,363.75x = 259,942.08 × 103,486.28
  4. Step 4: Simplify right side
    188,363.75x = 26,900,438,357.23
  5. Step 5: Solve for x
    x = 26,900,438,357.23/188,363.75
  6. Step 6: Final answer
    x = 142,811.12

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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.