Home / 140,039.85-193,220.42-82,680.51

Finding the Fourth Proportional to 140,039.85, 193,220.42 and 82,680.51

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Solution

The fourth proportional to 140,039.85, 193,220.42 and 82,680.51 is: 114,078.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,039.85 : 193,220.42 = 82,680.51 : x
  2. Step 2: Convert to fraction form
    140,039.85/193,220.42 = 82,680.51/x
  3. Step 3: Cross multiply
    140,039.85x = 193,220.42 × 82,680.51
  4. Step 4: Simplify right side
    140,039.85x = 15,975,562,868.01
  5. Step 5: Solve for x
    x = 15,975,562,868.01/140,039.85
  6. Step 6: Final answer
    x = 114,078.69

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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.