Finding the Fourth Proportional to 168,243,105.70, 252,364,658.55 and 72,504,993.70
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Solution
The fourth proportional to 168,243,105.70, 252,364,658.55 and 72,504,993.70 is: 108,757,490.55
Step by Step Solution
- Step 1: Write the proportion equation
168,243,105.70 : 252,364,658.55 = 72,504,993.70 : x - Step 2: Convert to fraction form
168,243,105.70/252,364,658.55 = 72,504,993.70/x - Step 3: Cross multiply
168,243,105.70x = 252,364,658.55 × 72,504,993.70 - Step 4: Simplify right side
168,243,105.70x = 18,297,697,978,270,404 - Step 5: Solve for x
x = 18,297,697,978,270,404/168,243,105.70 - Step 6: Final answer
x = 108,757,490.55
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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.