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Finding the Fourth Proportional to 105,704.56, 158,583.28 and 74,600.56

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Solution

The fourth proportional to 105,704.56, 158,583.28 and 74,600.56 is: 111,919.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,704.56 : 158,583.28 = 74,600.56 : x
  2. Step 2: Convert to fraction form
    105,704.56/158,583.28 = 74,600.56/x
  3. Step 3: Cross multiply
    105,704.56x = 158,583.28 × 74,600.56
  4. Step 4: Simplify right side
    105,704.56x = 11,830,401,494.64
  5. Step 5: Solve for x
    x = 11,830,401,494.64/105,704.56
  6. Step 6: Final answer
    x = 111,919.50

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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.