Finding the Fourth Proportional to 99,651,603.80, 149,477,405.70 and 74,142,435.80
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Solution
The fourth proportional to 99,651,603.80, 149,477,405.70 and 74,142,435.80 is: 111,213,653.70
Step by Step Solution
- Step 1: Write the proportion equation
99,651,603.80 : 149,477,405.70 = 74,142,435.80 : x - Step 2: Convert to fraction form
99,651,603.80/149,477,405.70 = 74,142,435.80/x - Step 3: Cross multiply
99,651,603.80x = 149,477,405.70 × 74,142,435.80 - Step 4: Simplify right side
99,651,603.80x = 11,082,618,955,662,802 - Step 5: Solve for x
x = 11,082,618,955,662,802/99,651,603.80 - Step 6: Final answer
x = 111,213,653.70
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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.