Finding the Fourth Proportional to 178,551,872.87, 246,387,981.26 and 100,220,292.99
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Solution
The fourth proportional to 178,551,872.87, 246,387,981.26 and 100,220,292.99 is: 138,296,368.86
Step by Step Solution
- Step 1: Write the proportion equation
178,551,872.87 : 246,387,981.26 = 100,220,292.99 : x - Step 2: Convert to fraction form
178,551,872.87/246,387,981.26 = 100,220,292.99/x - Step 3: Cross multiply
178,551,872.87x = 246,387,981.26 × 100,220,292.99 - Step 4: Simplify right side
178,551,872.87x = 24,693,075,670,590,728 - Step 5: Solve for x
x = 24,693,075,670,590,728/178,551,872.87 - Step 6: Final answer
x = 138,296,368.86
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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.