Home / 252,021.40-378,204.90-111,880.60

Finding the Fourth Proportional to 252,021.40, 378,204.90 and 111,880.60

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Solution

The fourth proportional to 252,021.40, 378,204.90 and 111,880.60 is: 167,897.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,021.40 : 378,204.90 = 111,880.60 : x
  2. Step 2: Convert to fraction form
    252,021.40/378,204.90 = 111,880.60/x
  3. Step 3: Cross multiply
    252,021.40x = 378,204.90 × 111,880.60
  4. Step 4: Simplify right side
    252,021.40x = 42,313,791,134.94
  5. Step 5: Solve for x
    x = 42,313,791,134.94/252,021.40
  6. Step 6: Final answer
    x = 167,897.61

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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.