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Finding the Fourth Proportional to 135,974.60, 203,891.86 and 61,030.50

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Solution

The fourth proportional to 135,974.60, 203,891.86 and 61,030.50 is: 91,514.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,974.60 : 203,891.86 = 61,030.50 : x
  2. Step 2: Convert to fraction form
    135,974.60/203,891.86 = 61,030.50/x
  3. Step 3: Cross multiply
    135,974.60x = 203,891.86 × 61,030.50
  4. Step 4: Simplify right side
    135,974.60x = 12,443,622,161.73
  5. Step 5: Solve for x
    x = 12,443,622,161.73/135,974.60
  6. Step 6: Final answer
    x = 91,514.31

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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.