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Finding the Fourth Proportional to 136,422.80, 204,650.60 and 69,845.05

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Solution

The fourth proportional to 136,422.80, 204,650.60 and 69,845.05 is: 104,775.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,422.80 : 204,650.60 = 69,845.05 : x
  2. Step 2: Convert to fraction form
    136,422.80/204,650.60 = 69,845.05/x
  3. Step 3: Cross multiply
    136,422.80x = 204,650.60 × 69,845.05
  4. Step 4: Simplify right side
    136,422.80x = 14,293,830,528.68
  5. Step 5: Solve for x
    x = 14,293,830,528.68/136,422.80
  6. Step 6: Final answer
    x = 104,775.97

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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.