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Finding the Fourth Proportional to 137,741.80, 206,612.70 and 136,429.60

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Solution

The fourth proportional to 137,741.80, 206,612.70 and 136,429.60 is: 204,644.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,741.80 : 206,612.70 = 136,429.60 : x
  2. Step 2: Convert to fraction form
    137,741.80/206,612.70 = 136,429.60/x
  3. Step 3: Cross multiply
    137,741.80x = 206,612.70 × 136,429.60
  4. Step 4: Simplify right side
    137,741.80x = 28,188,088,015.92
  5. Step 5: Solve for x
    x = 28,188,088,015.92/137,741.80
  6. Step 6: Final answer
    x = 204,644.40

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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.