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Finding the Fourth Proportional to 154,485.70, 231,512.55 and 122,949.70

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Solution

The fourth proportional to 154,485.70, 231,512.55 and 122,949.70 is: 184,252.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,485.70 : 231,512.55 = 122,949.70 : x
  2. Step 2: Convert to fraction form
    154,485.70/231,512.55 = 122,949.70/x
  3. Step 3: Cross multiply
    154,485.70x = 231,512.55 × 122,949.70
  4. Step 4: Simplify right side
    154,485.70x = 28,464,398,568.74
  5. Step 5: Solve for x
    x = 28,464,398,568.74/154,485.70
  6. Step 6: Final answer
    x = 184,252.64

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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.