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Finding the Fourth Proportional to 154,649.94, 213,846.39 and 122,763.54

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Solution

The fourth proportional to 154,649.94, 213,846.39 and 122,763.54 is: 169,754.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,649.94 : 213,846.39 = 122,763.54 : x
  2. Step 2: Convert to fraction form
    154,649.94/213,846.39 = 122,763.54/x
  3. Step 3: Cross multiply
    154,649.94x = 213,846.39 × 122,763.54
  4. Step 4: Simplify right side
    154,649.94x = 26,252,539,852.62
  5. Step 5: Solve for x
    x = 26,252,539,852.62/154,649.94
  6. Step 6: Final answer
    x = 169,754.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.