Finding the Third Proportional to 128,207,875.50 and 198,645,243.75
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Solution
The third proportional to 128,207,875.50 and 198,645,243.75 is: 307,780,880.94
Step by Step Solution
- Step 1: Write the proportion equation
128,207,875.50 : 198,645,243.75 = 198,645,243.75 : x - Step 2: Convert to fraction form
128,207,875.50/198,645,243.75 = 198,645,243.75/x - Step 3: Cross multiply
128,207,875.50x = 198,645,243.75 × 198,645,243.75 - Step 4: Simplify right side
128,207,875.50x = 39,459,932,864,496,912 - Step 5: Solve for x
x = 39,459,932,864,496,912/128,207,875.50 - Step 6: Final answer
x = 307,780,880.94
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Why These Related Problems?
These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.