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Finding the Fourth Proportional to 139,571.36, 209,353.12 and 44,800.80

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Solution

The fourth proportional to 139,571.36, 209,353.12 and 44,800.80 is: 67,199.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,571.36 : 209,353.12 = 44,800.80 : x
  2. Step 2: Convert to fraction form
    139,571.36/209,353.12 = 44,800.80/x
  3. Step 3: Cross multiply
    139,571.36x = 209,353.12 × 44,800.80
  4. Step 4: Simplify right side
    139,571.36x = 9,379,187,258.50
  5. Step 5: Solve for x
    x = 9,379,187,258.50/139,571.36
  6. Step 6: Final answer
    x = 67,199.94

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1.5x scale

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.