Home / 206,774.56-285,457.26-139,147.12

Finding the Fourth Proportional to 206,774.56, 285,457.26 and 139,147.12

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Solution

The fourth proportional to 206,774.56, 285,457.26 and 139,147.12 is: 192,095.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,774.56 : 285,457.26 = 139,147.12 : x
  2. Step 2: Convert to fraction form
    206,774.56/285,457.26 = 139,147.12/x
  3. Step 3: Cross multiply
    206,774.56x = 285,457.26 × 139,147.12
  4. Step 4: Simplify right side
    206,774.56x = 39,720,555,612.09
  5. Step 5: Solve for x
    x = 39,720,555,612.09/206,774.56
  6. Step 6: Final answer
    x = 192,095.95

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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.