Home / 198,902.28-274,485.18-109,478.28

Finding the Fourth Proportional to 198,902.28, 274,485.18 and 109,478.28

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Solution

The fourth proportional to 198,902.28, 274,485.18 and 109,478.28 is: 151,080.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,902.28 : 274,485.18 = 109,478.28 : x
  2. Step 2: Convert to fraction form
    198,902.28/274,485.18 = 109,478.28/x
  3. Step 3: Cross multiply
    198,902.28x = 274,485.18 × 109,478.28
  4. Step 4: Simplify right side
    198,902.28x = 30,050,165,391.89
  5. Step 5: Solve for x
    x = 30,050,165,391.89/198,902.28
  6. Step 6: Final answer
    x = 151,080.04

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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.