Home / 198,509.72-273,938.60-111,289.04

Finding the Fourth Proportional to 198,509.72, 273,938.60 and 111,289.04

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Solution

The fourth proportional to 198,509.72, 273,938.60 and 111,289.04 is: 153,576.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,509.72 : 273,938.60 = 111,289.04 : x
  2. Step 2: Convert to fraction form
    198,509.72/273,938.60 = 111,289.04/x
  3. Step 3: Cross multiply
    198,509.72x = 273,938.60 × 111,289.04
  4. Step 4: Simplify right side
    198,509.72x = 30,486,363,812.94
  5. Step 5: Solve for x
    x = 30,486,363,812.94/198,509.72
  6. Step 6: Final answer
    x = 153,576.18

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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.