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Finding the Fourth Proportional to 188,388.44, 259,970.82 and 103,505.48

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Solution

The fourth proportional to 188,388.44, 259,970.82 and 103,505.48 is: 142,834.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,388.44 : 259,970.82 = 103,505.48 : x
  2. Step 2: Convert to fraction form
    188,388.44/259,970.82 = 103,505.48/x
  3. Step 3: Cross multiply
    188,388.44x = 259,970.82 × 103,505.48
  4. Step 4: Simplify right side
    188,388.44x = 26,908,404,510.09
  5. Step 5: Solve for x
    x = 26,908,404,510.09/188,388.44
  6. Step 6: Final answer
    x = 142,834.69

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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.