Home / 189,403.91-261,432.05-111,951.31

Finding the Fourth Proportional to 189,403.91, 261,432.05 and 111,951.31

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Solution

The fourth proportional to 189,403.91, 261,432.05 and 111,951.31 is: 154,525.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,403.91 : 261,432.05 = 111,951.31 : x
  2. Step 2: Convert to fraction form
    189,403.91/261,432.05 = 111,951.31/x
  3. Step 3: Cross multiply
    189,403.91x = 261,432.05 × 111,951.31
  4. Step 4: Simplify right side
    189,403.91x = 29,267,660,099.78
  5. Step 5: Solve for x
    x = 29,267,660,099.78/189,403.91
  6. Step 6: Final answer
    x = 154,525.11

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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.