Home / 112,121.76-154,722.78-66,829.80

Finding the Fourth Proportional to 112,121.76, 154,722.78 and 66,829.80

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Solution

The fourth proportional to 112,121.76, 154,722.78 and 66,829.80 is: 92,222.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,121.76 : 154,722.78 = 66,829.80 : x
  2. Step 2: Convert to fraction form
    112,121.76/154,722.78 = 66,829.80/x
  3. Step 3: Cross multiply
    112,121.76x = 154,722.78 × 66,829.80
  4. Step 4: Simplify right side
    112,121.76x = 10,340,092,442.84
  5. Step 5: Solve for x
    x = 10,340,092,442.84/112,121.76
  6. Step 6: Final answer
    x = 92,222.00

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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.