Home / 139,647.06-209,439.03-39,805.11

Finding the Fourth Proportional to 139,647.06, 209,439.03 and 39,805.11

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Solution

The fourth proportional to 139,647.06, 209,439.03 and 39,805.11 is: 59,698.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,647.06 : 209,439.03 = 39,805.11 : x
  2. Step 2: Convert to fraction form
    139,647.06/209,439.03 = 39,805.11/x
  3. Step 3: Cross multiply
    139,647.06x = 209,439.03 × 39,805.11
  4. Step 4: Simplify right side
    139,647.06x = 8,336,743,627.44
  5. Step 5: Solve for x
    x = 8,336,743,627.44/139,647.06
  6. Step 6: Final answer
    x = 59,698.67

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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.