Home / 148,923.70-205,515.84-80,940.70

Finding the Fourth Proportional to 148,923.70, 205,515.84 and 80,940.70

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Solution

The fourth proportional to 148,923.70, 205,515.84 and 80,940.70 is: 111,698.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,923.70 : 205,515.84 = 80,940.70 : x
  2. Step 2: Convert to fraction form
    148,923.70/205,515.84 = 80,940.70/x
  3. Step 3: Cross multiply
    148,923.70x = 205,515.84 × 80,940.70
  4. Step 4: Simplify right side
    148,923.70x = 16,634,595,950.69
  5. Step 5: Solve for x
    x = 16,634,595,950.69/148,923.70
  6. Step 6: Final answer
    x = 111,698.78

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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.