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Finding the Fourth Proportional to 111,271.68, 166,907.64 and 28,165.68

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Solution

The fourth proportional to 111,271.68, 166,907.64 and 28,165.68 is: 42,248.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,271.68 : 166,907.64 = 28,165.68 : x
  2. Step 2: Convert to fraction form
    111,271.68/166,907.64 = 28,165.68/x
  3. Step 3: Cross multiply
    111,271.68x = 166,907.64 × 28,165.68
  4. Step 4: Simplify right side
    111,271.68x = 4,701,067,177.80
  5. Step 5: Solve for x
    x = 4,701,067,177.80/111,271.68
  6. Step 6: Final answer
    x = 42,248.55

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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.