Finding the Fourth Proportional to 136,628,069.70, 188,548,861.95 and 74,749,441.62
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Solution
The fourth proportional to 136,628,069.70, 188,548,861.95 and 74,749,441.62 is: 103,155,392.44
Step by Step Solution
- Step 1: Write the proportion equation
136,628,069.70 : 188,548,861.95 = 74,749,441.62 : x - Step 2: Convert to fraction form
136,628,069.70/188,548,861.95 = 74,749,441.62/x - Step 3: Cross multiply
136,628,069.70x = 188,548,861.95 × 74,749,441.62 - Step 4: Simplify right side
136,628,069.70x = 14,093,922,148,848,964 - Step 5: Solve for x
x = 14,093,922,148,848,964/136,628,069.70 - Step 6: Final answer
x = 103,155,392.44
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.