Finding the Fourth Proportional to 199,597,961.40, 299,396,942.10 and 130,723,207.80
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Solution
The fourth proportional to 199,597,961.40, 299,396,942.10 and 130,723,207.80 is: 196,084,811.70
Step by Step Solution
- Step 1: Write the proportion equation
199,597,961.40 : 299,396,942.10 = 130,723,207.80 : x - Step 2: Convert to fraction form
199,597,961.40/299,396,942.10 = 130,723,207.80/x - Step 3: Cross multiply
199,597,961.40x = 299,396,942.10 × 130,723,207.80 - Step 4: Simplify right side
199,597,961.40x = 39,138,128,676,822,872 - Step 5: Solve for x
x = 39,138,128,676,822,872/199,597,961.40 - Step 6: Final answer
x = 196,084,811.70
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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.