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Finding the Fourth Proportional to 188,208.15, 259,727.68 and 103,330.68

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Solution

The fourth proportional to 188,208.15, 259,727.68 and 103,330.68 is: 142,596.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,208.15 : 259,727.68 = 103,330.68 : x
  2. Step 2: Convert to fraction form
    188,208.15/259,727.68 = 103,330.68/x
  3. Step 3: Cross multiply
    188,208.15x = 259,727.68 × 103,330.68
  4. Step 4: Simplify right side
    188,208.15x = 26,837,837,789.22
  5. Step 5: Solve for x
    x = 26,837,837,789.22/188,208.15
  6. Step 6: Final answer
    x = 142,596.58

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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.