Finding the Fourth Proportional to 99,649,940.30, 149,474,910.45 and 73,821,907.70
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Solution
The fourth proportional to 99,649,940.30, 149,474,910.45 and 73,821,907.70 is: 110,732,861.55
Step by Step Solution
- Step 1: Write the proportion equation
99,649,940.30 : 149,474,910.45 = 73,821,907.70 : x - Step 2: Convert to fraction form
99,649,940.30/149,474,910.45 = 73,821,907.70/x - Step 3: Cross multiply
99,649,940.30x = 149,474,910.45 × 73,821,907.70 - Step 4: Simplify right side
99,649,940.30x = 11,034,523,042,705,666 - Step 5: Solve for x
x = 11,034,523,042,705,666/99,649,940.30 - Step 6: Final answer
x = 110,732,861.55
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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.