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Finding the Fourth Proportional to 136,883.52, 188,893.62 and 76,453.88

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Solution

The fourth proportional to 136,883.52, 188,893.62 and 76,453.88 is: 105,503.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,883.52 : 188,893.62 = 76,453.88 : x
  2. Step 2: Convert to fraction form
    136,883.52/188,893.62 = 76,453.88/x
  3. Step 3: Cross multiply
    136,883.52x = 188,893.62 × 76,453.88
  4. Step 4: Simplify right side
    136,883.52x = 14,441,649,211.78
  5. Step 5: Solve for x
    x = 14,441,649,211.78/136,883.52
  6. Step 6: Final answer
    x = 105,503.20

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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.