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Finding the Fourth Proportional to 111,880.40, 167,912.40 and 111,005.60

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Solution

The fourth proportional to 111,880.40, 167,912.40 and 111,005.60 is: 166,599.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,880.40 : 167,912.40 = 111,005.60 : x
  2. Step 2: Convert to fraction form
    111,880.40/167,912.40 = 111,005.60/x
  3. Step 3: Cross multiply
    111,880.40x = 167,912.40 × 111,005.60
  4. Step 4: Simplify right side
    111,880.40x = 18,639,216,709.44
  5. Step 5: Solve for x
    x = 18,639,216,709.44/111,880.40
  6. Step 6: Final answer
    x = 166,599.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.