Finding the Fourth Proportional to 142,759,674.60, 196,990,933.68 and 80,021,293.08
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Solution
The fourth proportional to 142,759,674.60, 196,990,933.68 and 80,021,293.08 is: 110,419,621.52
Step by Step Solution
- Step 1: Write the proportion equation
142,759,674.60 : 196,990,933.68 = 80,021,293.08 : x - Step 2: Convert to fraction form
142,759,674.60/196,990,933.68 = 80,021,293.08/x - Step 3: Cross multiply
142,759,674.60x = 196,990,933.68 × 80,021,293.08 - Step 4: Simplify right side
142,759,674.60x = 15,763,469,238,110,124 - Step 5: Solve for x
x = 15,763,469,238,110,124/142,759,674.60 - Step 6: Final answer
x = 110,419,621.52
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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.