Home / 189,318.20-261,212.49-115,711.98

Finding the Fourth Proportional to 189,318.20, 261,212.49 and 115,711.98

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Solution

The fourth proportional to 189,318.20, 261,212.49 and 115,711.98 is: 159,654.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,318.20 : 261,212.49 = 115,711.98 : x
  2. Step 2: Convert to fraction form
    189,318.20/261,212.49 = 115,711.98/x
  3. Step 3: Cross multiply
    189,318.20x = 261,212.49 × 115,711.98
  4. Step 4: Simplify right side
    189,318.20x = 30,225,414,418.63
  5. Step 5: Solve for x
    x = 30,225,414,418.63/189,318.20
  6. Step 6: Final answer
    x = 159,654.04

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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.