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Finding the Fourth Proportional to 111,415.20, 167,122.80 and 102,861.60

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Solution

The fourth proportional to 111,415.20, 167,122.80 and 102,861.60 is: 154,292.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,415.20 : 167,122.80 = 102,861.60 : x
  2. Step 2: Convert to fraction form
    111,415.20/167,122.80 = 102,861.60/x
  3. Step 3: Cross multiply
    111,415.20x = 167,122.80 × 102,861.60
  4. Step 4: Simplify right side
    111,415.20x = 17,190,518,604.48
  5. Step 5: Solve for x
    x = 17,190,518,604.48/111,415.20
  6. Step 6: Final answer
    x = 154,292.40

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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.