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Finding the Fourth Proportional to 188,651.21, 282,908.34 and 103,325.45

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Solution

The fourth proportional to 188,651.21, 282,908.34 and 103,325.45 is: 154,950.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,651.21 : 282,908.34 = 103,325.45 : x
  2. Step 2: Convert to fraction form
    188,651.21/282,908.34 = 103,325.45/x
  3. Step 3: Cross multiply
    188,651.21x = 282,908.34 × 103,325.45
  4. Step 4: Simplify right side
    188,651.21x = 29,231,631,539.25
  5. Step 5: Solve for x
    x = 29,231,631,539.25/188,651.21
  6. Step 6: Final answer
    x = 154,950.67

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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.