Home / 209,490.38-289,100.23-113,998.54

Finding the Fourth Proportional to 209,490.38, 289,100.23 and 113,998.54

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Solution

The fourth proportional to 209,490.38, 289,100.23 and 113,998.54 is: 157,319.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,490.38 : 289,100.23 = 113,998.54 : x
  2. Step 2: Convert to fraction form
    209,490.38/289,100.23 = 113,998.54/x
  3. Step 3: Cross multiply
    209,490.38x = 289,100.23 × 113,998.54
  4. Step 4: Simplify right side
    209,490.38x = 32,957,004,133.66
  5. Step 5: Solve for x
    x = 32,957,004,133.66/209,490.38
  6. Step 6: Final answer
    x = 157,319.89

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1.5x scale

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.