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Finding the Fourth Proportional to 189,912.64, 262,114.50 and 122,014.49

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Solution

The fourth proportional to 189,912.64, 262,114.50 and 122,014.49 is: 168,402.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,912.64 : 262,114.50 = 122,014.49 : x
  2. Step 2: Convert to fraction form
    189,912.64/262,114.50 = 122,014.49/x
  3. Step 3: Cross multiply
    189,912.64x = 262,114.50 × 122,014.49
  4. Step 4: Simplify right side
    189,912.64x = 31,981,767,344.14
  5. Step 5: Solve for x
    x = 31,981,767,344.14/189,912.64
  6. Step 6: Final answer
    x = 168,402.52

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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.