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Finding the Fourth Proportional to 136,805.73, 205,240.20 and 43,311.48

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Solution

The fourth proportional to 136,805.73, 205,240.20 and 43,311.48 is: 64,977.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,805.73 : 205,240.20 = 43,311.48 : x
  2. Step 2: Convert to fraction form
    136,805.73/205,240.20 = 43,311.48/x
  3. Step 3: Cross multiply
    136,805.73x = 205,240.20 × 43,311.48
  4. Step 4: Simplify right side
    136,805.73x = 8,889,256,817.50
  5. Step 5: Solve for x
    x = 8,889,256,817.50/136,805.73
  6. Step 6: Final answer
    x = 64,977.23

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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.