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Finding the Fourth Proportional to 137,852.74, 206,780.19 and 75,489.22

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Solution

The fourth proportional to 137,852.74, 206,780.19 and 75,489.22 is: 113,234.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,852.74 : 206,780.19 = 75,489.22 : x
  2. Step 2: Convert to fraction form
    137,852.74/206,780.19 = 75,489.22/x
  3. Step 3: Cross multiply
    137,852.74x = 206,780.19 × 75,489.22
  4. Step 4: Simplify right side
    137,852.74x = 15,609,675,254.55
  5. Step 5: Solve for x
    x = 15,609,675,254.55/137,852.74
  6. Step 6: Final answer
    x = 113,234.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.