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Finding the Fourth Proportional to 111,212.40, 166,818.60 and 66,816.30

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Solution

The fourth proportional to 111,212.40, 166,818.60 and 66,816.30 is: 100,224.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,212.40 : 166,818.60 = 66,816.30 : x
  2. Step 2: Convert to fraction form
    111,212.40/166,818.60 = 66,816.30/x
  3. Step 3: Cross multiply
    111,212.40x = 166,818.60 × 66,816.30
  4. Step 4: Simplify right side
    111,212.40x = 11,146,201,623.18
  5. Step 5: Solve for x
    x = 11,146,201,623.18/111,212.40
  6. Step 6: Final answer
    x = 100,224.45

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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.