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Finding the Fourth Proportional to 189,871.29, 262,021.23 and 113,425.11

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Solution

The fourth proportional to 189,871.29, 262,021.23 and 113,425.11 is: 156,525.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,871.29 : 262,021.23 = 113,425.11 : x
  2. Step 2: Convert to fraction form
    189,871.29/262,021.23 = 113,425.11/x
  3. Step 3: Cross multiply
    189,871.29x = 262,021.23 × 113,425.11
  4. Step 4: Simplify right side
    189,871.29x = 29,719,786,835.09
  5. Step 5: Solve for x
    x = 29,719,786,835.09/189,871.29
  6. Step 6: Final answer
    x = 156,525.96

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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.