Home / 154,778.20-231,821.70-119,440.60

Finding the Fourth Proportional to 154,778.20, 231,821.70 and 119,440.60

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Solution

The fourth proportional to 154,778.20, 231,821.70 and 119,440.60 is: 178,894.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,778.20 : 231,821.70 = 119,440.60 : x
  2. Step 2: Convert to fraction form
    154,778.20/231,821.70 = 119,440.60/x
  3. Step 3: Cross multiply
    154,778.20x = 231,821.70 × 119,440.60
  4. Step 4: Simplify right side
    154,778.20x = 27,688,922,941.02
  5. Step 5: Solve for x
    x = 27,688,922,941.02/154,778.20
  6. Step 6: Final answer
    x = 178,894.20

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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.