Home / 148,923.21-205,515.60-80,940.18

Finding the Fourth Proportional to 148,923.21, 205,515.60 and 80,940.18

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Solution

The fourth proportional to 148,923.21, 205,515.60 and 80,940.18 is: 111,698.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,923.21 : 205,515.60 = 80,940.18 : x
  2. Step 2: Convert to fraction form
    148,923.21/205,515.60 = 80,940.18/x
  3. Step 3: Cross multiply
    148,923.21x = 205,515.60 × 80,940.18
  4. Step 4: Simplify right side
    148,923.21x = 16,634,469,656.81
  5. Step 5: Solve for x
    x = 16,634,469,656.81/148,923.21
  6. Step 6: Final answer
    x = 111,698.30

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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.