Home / 84,868.20-127,043.10-66,205.80

Finding the Fourth Proportional to 84,868.20, 127,043.10 and 66,205.80

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Solution

The fourth proportional to 84,868.20, 127,043.10 and 66,205.80 is: 99,106.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,868.20 : 127,043.10 = 66,205.80 : x
  2. Step 2: Convert to fraction form
    84,868.20/127,043.10 = 66,205.80/x
  3. Step 3: Cross multiply
    84,868.20x = 127,043.10 × 66,205.80
  4. Step 4: Simplify right side
    84,868.20x = 8,410,990,069.98
  5. Step 5: Solve for x
    x = 8,410,990,069.98/84,868.20
  6. Step 6: Final answer
    x = 99,106.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.