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Finding the Fourth Proportional to 111,830.40, 167,745.60 and 45,302.40

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Solution

The fourth proportional to 111,830.40, 167,745.60 and 45,302.40 is: 67,953.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,830.40 : 167,745.60 = 45,302.40 : x
  2. Step 2: Convert to fraction form
    111,830.40/167,745.60 = 45,302.40/x
  3. Step 3: Cross multiply
    111,830.40x = 167,745.60 × 45,302.40
  4. Step 4: Simplify right side
    111,830.40x = 7,599,278,269.44
  5. Step 5: Solve for x
    x = 7,599,278,269.44/111,830.40
  6. Step 6: Final answer
    x = 67,953.60

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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.