Home / 111,999.18-154,504.38-71,680.62

Finding the Fourth Proportional to 111,999.18, 154,504.38 and 71,680.62

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Solution

The fourth proportional to 111,999.18, 154,504.38 and 71,680.62 is: 98,884.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,999.18 : 154,504.38 = 71,680.62 : x
  2. Step 2: Convert to fraction form
    111,999.18/154,504.38 = 71,680.62/x
  3. Step 3: Cross multiply
    111,999.18x = 154,504.38 × 71,680.62
  4. Step 4: Simplify right side
    111,999.18x = 11,074,969,751.12
  5. Step 5: Solve for x
    x = 11,074,969,751.12/111,999.18
  6. Step 6: Final answer
    x = 98,884.38

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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.