Home / 148,690.84-205,188.78-80,704.60

Finding the Fourth Proportional to 148,690.84, 205,188.78 and 80,704.60

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Solution

The fourth proportional to 148,690.84, 205,188.78 and 80,704.60 is: 111,369.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,690.84 : 205,188.78 = 80,704.60 : x
  2. Step 2: Convert to fraction form
    148,690.84/205,188.78 = 80,704.60/x
  3. Step 3: Cross multiply
    148,690.84x = 205,188.78 × 80,704.60
  4. Step 4: Simplify right side
    148,690.84x = 16,559,678,414.39
  5. Step 5: Solve for x
    x = 16,559,678,414.39/148,690.84
  6. Step 6: Final answer
    x = 111,369.86

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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.