Home / 140,819.77-194,339.55-80,409.36

Finding the Fourth Proportional to 140,819.77, 194,339.55 and 80,409.36

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Solution

The fourth proportional to 140,819.77, 194,339.55 and 80,409.36 is: 110,969.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,819.77 : 194,339.55 = 80,409.36 : x
  2. Step 2: Convert to fraction form
    140,819.77/194,339.55 = 80,409.36/x
  3. Step 3: Cross multiply
    140,819.77x = 194,339.55 × 80,409.36
  4. Step 4: Simplify right side
    140,819.77x = 15,626,718,838.19
  5. Step 5: Solve for x
    x = 15,626,718,838.19/140,819.77
  6. Step 6: Final answer
    x = 110,969.64

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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.