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Finding the Fourth Proportional to 139,506.66, 209,315.88 and 50,766.30

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Solution

The fourth proportional to 139,506.66, 209,315.88 and 50,766.30 is: 76,169.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,506.66 : 209,315.88 = 50,766.30 : x
  2. Step 2: Convert to fraction form
    139,506.66/209,315.88 = 50,766.30/x
  3. Step 3: Cross multiply
    139,506.66x = 209,315.88 × 50,766.30
  4. Step 4: Simplify right side
    139,506.66x = 10,626,192,758.84
  5. Step 5: Solve for x
    x = 10,626,192,758.84/139,506.66
  6. Step 6: Final answer
    x = 76,169.79

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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.