Home / 198,695.20-274,138.52-112,640.40

Finding the Fourth Proportional to 198,695.20, 274,138.52 and 112,640.40

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Solution

The fourth proportional to 198,695.20, 274,138.52 and 112,640.40 is: 155,409.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,695.20 : 274,138.52 = 112,640.40 : x
  2. Step 2: Convert to fraction form
    198,695.20/274,138.52 = 112,640.40/x
  3. Step 3: Cross multiply
    198,695.20x = 274,138.52 × 112,640.40
  4. Step 4: Simplify right side
    198,695.20x = 30,879,072,548.21
  5. Step 5: Solve for x
    x = 30,879,072,548.21/198,695.20
  6. Step 6: Final answer
    x = 155,409.25

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1.5x scale

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.