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Finding the Fourth Proportional to 188,274.31, 259,820.22 and 103,391.98

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Solution

The fourth proportional to 188,274.31, 259,820.22 and 103,391.98 is: 142,681.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,274.31 : 259,820.22 = 103,391.98 : x
  2. Step 2: Convert to fraction form
    188,274.31/259,820.22 = 103,391.98/x
  3. Step 3: Cross multiply
    188,274.31x = 259,820.22 × 103,391.98
  4. Step 4: Simplify right side
    188,274.31x = 26,863,327,702.33
  5. Step 5: Solve for x
    x = 26,863,327,702.33/188,274.31
  6. Step 6: Final answer
    x = 142,681.85

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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.