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Finding the Fourth Proportional to 188,243.92, 259,780.80 and 103,361.32

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Solution

The fourth proportional to 188,243.92, 259,780.80 and 103,361.32 is: 142,640.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,243.92 : 259,780.80 = 103,361.32 : x
  2. Step 2: Convert to fraction form
    188,243.92/259,780.80 = 103,361.32/x
  3. Step 3: Cross multiply
    188,243.92x = 259,780.80 × 103,361.32
  4. Step 4: Simplify right side
    188,243.92x = 26,851,286,398.66
  5. Step 5: Solve for x
    x = 26,851,286,398.66/188,243.92
  6. Step 6: Final answer
    x = 142,640.92

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1.5x scale

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.