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Finding the Fourth Proportional to 122,954.60, 184,431.90 and 120,986.30

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Solution

The fourth proportional to 122,954.60, 184,431.90 and 120,986.30 is: 181,479.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,954.60 : 184,431.90 = 120,986.30 : x
  2. Step 2: Convert to fraction form
    122,954.60/184,431.90 = 120,986.30/x
  3. Step 3: Cross multiply
    122,954.60x = 184,431.90 × 120,986.30
  4. Step 4: Simplify right side
    122,954.60x = 22,313,733,182.97
  5. Step 5: Solve for x
    x = 22,313,733,182.97/122,954.60
  6. Step 6: Final answer
    x = 181,479.45

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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.