Finding the Fourth Proportional to 142,171,539.62, 196,138,299.57 and 86,407,974.68
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Solution
The fourth proportional to 142,171,539.62, 196,138,299.57 and 86,407,974.68 is: 119,207,495.88
Step by Step Solution
- Step 1: Write the proportion equation
142,171,539.62 : 196,138,299.57 = 86,407,974.68 : x - Step 2: Convert to fraction form
142,171,539.62/196,138,299.57 = 86,407,974.68/x - Step 3: Cross multiply
142,171,539.62x = 196,138,299.57 × 86,407,974.68 - Step 4: Simplify right side
142,171,539.62x = 16,947,913,223,022,816 - Step 5: Solve for x
x = 16,947,913,223,022,816/142,171,539.62 - Step 6: Final answer
x = 119,207,495.88
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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.