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Finding the Fourth Proportional to 111,137.88, 166,700.95 and 31,181.42

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Solution

The fourth proportional to 111,137.88, 166,700.95 and 31,181.42 is: 46,770.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,137.88 : 166,700.95 = 31,181.42 : x
  2. Step 2: Convert to fraction form
    111,137.88/166,700.95 = 31,181.42/x
  3. Step 3: Cross multiply
    111,137.88x = 166,700.95 × 31,181.42
  4. Step 4: Simplify right side
    111,137.88x = 5,197,971,424.89
  5. Step 5: Solve for x
    x = 5,197,971,424.89/111,137.88
  6. Step 6: Final answer
    x = 46,770.47

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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.