Home / 196,312.80-270,912.96-111,431.28

Finding the Fourth Proportional to 196,312.80, 270,912.96 and 111,431.28

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Solution

The fourth proportional to 196,312.80, 270,912.96 and 111,431.28 is: 153,775.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,312.80 : 270,912.96 = 111,431.28 : x
  2. Step 2: Convert to fraction form
    196,312.80/270,912.96 = 111,431.28/x
  3. Step 3: Cross multiply
    196,312.80x = 270,912.96 × 111,431.28
  4. Step 4: Simplify right side
    196,312.80x = 30,188,177,901.39
  5. Step 5: Solve for x
    x = 30,188,177,901.39/196,312.80
  6. Step 6: Final answer
    x = 153,775.90

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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.