Home / 125,540.70-188,311.05-72,396.60

Finding the Fourth Proportional to 125,540.70, 188,311.05 and 72,396.60

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Solution

The fourth proportional to 125,540.70, 188,311.05 and 72,396.60 is: 108,594.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,540.70 : 188,311.05 = 72,396.60 : x
  2. Step 2: Convert to fraction form
    125,540.70/188,311.05 = 72,396.60/x
  3. Step 3: Cross multiply
    125,540.70x = 188,311.05 × 72,396.60
  4. Step 4: Simplify right side
    125,540.70x = 13,633,079,762.43
  5. Step 5: Solve for x
    x = 13,633,079,762.43/125,540.70
  6. Step 6: Final answer
    x = 108,594.90

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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.