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Finding the Fourth Proportional to 188,212.58, 259,730.12 and 103,329.03

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Solution

The fourth proportional to 188,212.58, 259,730.12 and 103,329.03 is: 142,592.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,212.58 : 259,730.12 = 103,329.03 : x
  2. Step 2: Convert to fraction form
    188,212.58/259,730.12 = 103,329.03/x
  3. Step 3: Cross multiply
    188,212.58x = 259,730.12 × 103,329.03
  4. Step 4: Simplify right side
    188,212.58x = 26,837,660,844.74
  5. Step 5: Solve for x
    x = 26,837,660,844.74/188,212.58
  6. Step 6: Final answer
    x = 142,592.28

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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.