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Finding the Fourth Proportional to 111,229.76, 166,844.48 and 28,123.84

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Solution

The fourth proportional to 111,229.76, 166,844.48 and 28,123.84 is: 42,185.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,229.76 : 166,844.48 = 28,123.84 : x
  2. Step 2: Convert to fraction form
    111,229.76/166,844.48 = 28,123.84/x
  3. Step 3: Cross multiply
    111,229.76x = 166,844.48 × 28,123.84
  4. Step 4: Simplify right side
    111,229.76x = 4,692,307,460.40
  5. Step 5: Solve for x
    x = 4,692,307,460.40/111,229.76
  6. Step 6: Final answer
    x = 42,185.72

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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.