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Finding the Fourth Proportional to 139,574.34, 209,448.99 and 73,067.67

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Solution

The fourth proportional to 139,574.34, 209,448.99 and 73,067.67 is: 109,647.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,574.34 : 209,448.99 = 73,067.67 : x
  2. Step 2: Convert to fraction form
    139,574.34/209,448.99 = 73,067.67/x
  3. Step 3: Cross multiply
    139,574.34x = 209,448.99 × 73,067.67
  4. Step 4: Simplify right side
    139,574.34x = 15,303,949,683.15
  5. Step 5: Solve for x
    x = 15,303,949,683.15/139,574.34
  6. Step 6: Final answer
    x = 109,647.30

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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.