Home / 209,763.60-289,427.76-137,183.28

Finding the Fourth Proportional to 209,763.60, 289,427.76 and 137,183.28

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Solution

The fourth proportional to 209,763.60, 289,427.76 and 137,183.28 is: 189,282.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,763.60 : 289,427.76 = 137,183.28 : x
  2. Step 2: Convert to fraction form
    209,763.60/289,427.76 = 137,183.28/x
  3. Step 3: Cross multiply
    209,763.60x = 289,427.76 × 137,183.28
  4. Step 4: Simplify right side
    209,763.60x = 39,704,649,439.85
  5. Step 5: Solve for x
    x = 39,704,649,439.85/209,763.60
  6. Step 6: Final answer
    x = 189,282.84

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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.