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Finding the Fourth Proportional to 188,268, 259,809.84 and 103,386.48

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Solution

The fourth proportional to 188,268, 259,809.84 and 103,386.48 is: 142,673.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,268 : 259,809.84 = 103,386.48 : x
  2. Step 2: Convert to fraction form
    188,268/259,809.84 = 103,386.48/x
  3. Step 3: Cross multiply
    188,268x = 259,809.84 × 103,386.48
  4. Step 4: Simplify right side
    188,268x = 26,860,824,826.96
  5. Step 5: Solve for x
    x = 26,860,824,826.96/188,268
  6. Step 6: Final answer
    x = 142,673.34

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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.