Home / 209,039.40-313,559.10-125,890.60

Finding the Fourth Proportional to 209,039.40, 313,559.10 and 125,890.60

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Solution

The fourth proportional to 209,039.40, 313,559.10 and 125,890.60 is: 188,835.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,039.40 : 313,559.10 = 125,890.60 : x
  2. Step 2: Convert to fraction form
    209,039.40/313,559.10 = 125,890.60/x
  3. Step 3: Cross multiply
    209,039.40x = 313,559.10 × 125,890.60
  4. Step 4: Simplify right side
    209,039.40x = 39,474,143,234.46
  5. Step 5: Solve for x
    x = 39,474,143,234.46/209,039.40
  6. Step 6: Final answer
    x = 188,835.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.