Home / 189,367.45-261,421.77-117,770.54

Finding the Fourth Proportional to 189,367.45, 261,421.77 and 117,770.54

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Solution

The fourth proportional to 189,367.45, 261,421.77 and 117,770.54 is: 162,582.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,367.45 : 261,421.77 = 117,770.54 : x
  2. Step 2: Convert to fraction form
    189,367.45/261,421.77 = 117,770.54/x
  3. Step 3: Cross multiply
    189,367.45x = 261,421.77 × 117,770.54
  4. Step 4: Simplify right side
    189,367.45x = 30,787,783,020.66
  5. Step 5: Solve for x
    x = 30,787,783,020.66/189,367.45
  6. Step 6: Final answer
    x = 162,582.23

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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.