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Finding the Fourth Proportional to 137,976.60, 206,802.90 and 136,499.16

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Solution

The fourth proportional to 137,976.60, 206,802.90 and 136,499.16 is: 204,588.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,976.60 : 206,802.90 = 136,499.16 : x
  2. Step 2: Convert to fraction form
    137,976.60/206,802.90 = 136,499.16/x
  3. Step 3: Cross multiply
    137,976.60x = 206,802.90 × 136,499.16
  4. Step 4: Simplify right side
    137,976.60x = 28,228,422,135.56
  5. Step 5: Solve for x
    x = 28,228,422,135.56/137,976.60
  6. Step 6: Final answer
    x = 204,588.47

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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.