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Finding the Fourth Proportional to 111,990.40, 167,499.60 and 100,229.20

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Solution

The fourth proportional to 111,990.40, 167,499.60 and 100,229.20 is: 149,908.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,990.40 : 167,499.60 = 100,229.20 : x
  2. Step 2: Convert to fraction form
    111,990.40/167,499.60 = 100,229.20/x
  3. Step 3: Cross multiply
    111,990.40x = 167,499.60 × 100,229.20
  4. Step 4: Simplify right side
    111,990.40x = 16,788,350,908.32
  5. Step 5: Solve for x
    x = 16,788,350,908.32/111,990.40
  6. Step 6: Final answer
    x = 149,908.84

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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.