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Finding the Fourth Proportional to 111,205.80, 166,808.70 and 107,269.20

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Solution

The fourth proportional to 111,205.80, 166,808.70 and 107,269.20 is: 160,903.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,205.80 : 166,808.70 = 107,269.20 : x
  2. Step 2: Convert to fraction form
    111,205.80/166,808.70 = 107,269.20/x
  3. Step 3: Cross multiply
    111,205.80x = 166,808.70 × 107,269.20
  4. Step 4: Simplify right side
    111,205.80x = 17,893,435,802.04
  5. Step 5: Solve for x
    x = 17,893,435,802.04/111,205.80
  6. Step 6: Final answer
    x = 160,903.80

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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.