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Finding the Fourth Proportional to 139,535.70, 209,240.91 and 44,748.42

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Solution

The fourth proportional to 139,535.70, 209,240.91 and 44,748.42 is: 67,102.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,535.70 : 209,240.91 = 44,748.42 : x
  2. Step 2: Convert to fraction form
    139,535.70/209,240.91 = 44,748.42/x
  3. Step 3: Cross multiply
    139,535.70x = 209,240.91 × 44,748.42
  4. Step 4: Simplify right side
    139,535.70x = 9,363,200,121.86
  5. Step 5: Solve for x
    x = 9,363,200,121.86/139,535.70
  6. Step 6: Final answer
    x = 67,102.54

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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.