Finding the Fourth Proportional to 206,856,812.10, 310,285,218.15 and 91,719,135.30
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Solution
The fourth proportional to 206,856,812.10, 310,285,218.15 and 91,719,135.30 is: 137,578,702.95
Step by Step Solution
- Step 1: Write the proportion equation
206,856,812.10 : 310,285,218.15 = 91,719,135.30 : x - Step 2: Convert to fraction form
206,856,812.10/310,285,218.15 = 91,719,135.30/x - Step 3: Cross multiply
206,856,812.10x = 310,285,218.15 × 91,719,135.30 - Step 4: Simplify right side
206,856,812.10x = 28,459,091,905,089,864 - Step 5: Solve for x
x = 28,459,091,905,089,864/206,856,812.10 - Step 6: Final answer
x = 137,578,702.95
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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.