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Finding the Fourth Proportional to 125,771.50, 188,611.57 and 68,887.63

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Solution

The fourth proportional to 125,771.50, 188,611.57 and 68,887.63 is: 103,306.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,771.50 : 188,611.57 = 68,887.63 : x
  2. Step 2: Convert to fraction form
    125,771.50/188,611.57 = 68,887.63/x
  3. Step 3: Cross multiply
    125,771.50x = 188,611.57 × 68,887.63
  4. Step 4: Simplify right side
    125,771.50x = 12,993,004,047.88
  5. Step 5: Solve for x
    x = 12,993,004,047.88/125,771.50
  6. Step 6: Final answer
    x = 103,306.43

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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.