Finding the Fourth Proportional to 99,649,938.30, 149,474,907.45 and 73,821,905.70
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Solution
The fourth proportional to 99,649,938.30, 149,474,907.45 and 73,821,905.70 is: 110,732,858.55
Step by Step Solution
- Step 1: Write the proportion equation
99,649,938.30 : 149,474,907.45 = 73,821,905.70 : x - Step 2: Convert to fraction form
99,649,938.30/149,474,907.45 = 73,821,905.70/x - Step 3: Cross multiply
99,649,938.30x = 149,474,907.45 × 73,821,905.70 - Step 4: Simplify right side
99,649,938.30x = 11,034,522,522,290,128 - Step 5: Solve for x
x = 11,034,522,522,290,128/99,649,938.30 - Step 6: Final answer
x = 110,732,858.55
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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.