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Finding the Fourth Proportional to 111,424.01, 166,840.77 and 66,989.64

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Solution

The fourth proportional to 111,424.01, 166,840.77 and 66,989.64 is: 100,306.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,424.01 : 166,840.77 = 66,989.64 : x
  2. Step 2: Convert to fraction form
    111,424.01/166,840.77 = 66,989.64/x
  3. Step 3: Cross multiply
    111,424.01x = 166,840.77 × 66,989.64
  4. Step 4: Simplify right side
    111,424.01x = 11,176,603,119.62
  5. Step 5: Solve for x
    x = 11,176,603,119.62/111,424.01
  6. Step 6: Final answer
    x = 100,306.95

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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.