Home / 206,847.20-285,440.08-126,409.28

Finding the Fourth Proportional to 206,847.20, 285,440.08 and 126,409.28

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Solution

The fourth proportional to 206,847.20, 285,440.08 and 126,409.28 is: 174,439.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,847.20 : 285,440.08 = 126,409.28 : x
  2. Step 2: Convert to fraction form
    206,847.20/285,440.08 = 126,409.28/x
  3. Step 3: Cross multiply
    206,847.20x = 285,440.08 × 126,409.28
  4. Step 4: Simplify right side
    206,847.20x = 36,082,274,995.94
  5. Step 5: Solve for x
    x = 36,082,274,995.94/206,847.20
  6. Step 6: Final answer
    x = 174,439.27

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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.