Home / 190,931.20-285,813.60-148,940.80

Finding the Fourth Proportional to 190,931.20, 285,813.60 and 148,940.80

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Solution

The fourth proportional to 190,931.20, 285,813.60 and 148,940.80 is: 222,956.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,931.20 : 285,813.60 = 148,940.80 : x
  2. Step 2: Convert to fraction form
    190,931.20/285,813.60 = 148,940.80/x
  3. Step 3: Cross multiply
    190,931.20x = 285,813.60 × 148,940.80
  4. Step 4: Simplify right side
    190,931.20x = 42,569,306,234.88
  5. Step 5: Solve for x
    x = 42,569,306,234.88/190,931.20
  6. Step 6: Final answer
    x = 222,956.26

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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.