Home / 206,128.87-284,457.49-115,485.41

Finding the Fourth Proportional to 206,128.87, 284,457.49 and 115,485.41

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Solution

The fourth proportional to 206,128.87, 284,457.49 and 115,485.41 is: 159,369.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,128.87 : 284,457.49 = 115,485.41 : x
  2. Step 2: Convert to fraction form
    206,128.87/284,457.49 = 115,485.41/x
  3. Step 3: Cross multiply
    206,128.87x = 284,457.49 × 115,485.41
  4. Step 4: Simplify right side
    206,128.87x = 32,850,690,282.65
  5. Step 5: Solve for x
    x = 32,850,690,282.65/206,128.87
  6. Step 6: Final answer
    x = 159,369.67

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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.