Home / 139,633.20-209,433.60-39,808.80

Finding the Fourth Proportional to 139,633.20, 209,433.60 and 39,808.80

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Solution

The fourth proportional to 139,633.20, 209,433.60 and 39,808.80 is: 59,708.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,633.20 : 209,433.60 = 39,808.80 : x
  2. Step 2: Convert to fraction form
    139,633.20/209,433.60 = 39,808.80/x
  3. Step 3: Cross multiply
    139,633.20x = 209,433.60 × 39,808.80
  4. Step 4: Simplify right side
    139,633.20x = 8,337,300,295.68
  5. Step 5: Solve for x
    x = 8,337,300,295.68/139,633.20
  6. Step 6: Final answer
    x = 59,708.58

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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.