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Finding the Fourth Proportional to 111,206.40, 166,809.60 and 103,770.60

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Solution

The fourth proportional to 111,206.40, 166,809.60 and 103,770.60 is: 155,655.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,206.40 : 166,809.60 = 103,770.60 : x
  2. Step 2: Convert to fraction form
    111,206.40/166,809.60 = 103,770.60/x
  3. Step 3: Cross multiply
    111,206.40x = 166,809.60 × 103,770.60
  4. Step 4: Simplify right side
    111,206.40x = 17,309,932,277.76
  5. Step 5: Solve for x
    x = 17,309,932,277.76/111,206.40
  6. Step 6: Final answer
    x = 155,655.90

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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.