Finding the Fourth Proportional to 135,288,638.40, 202,783,658.40 and 74,747,812.80
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Solution
The fourth proportional to 135,288,638.40, 202,783,658.40 and 74,747,812.80 is: 112,039,230.46
Step by Step Solution
- Step 1: Write the proportion equation
135,288,638.40 : 202,783,658.40 = 74,747,812.80 : x - Step 2: Convert to fraction form
135,288,638.40/202,783,658.40 = 74,747,812.80/x - Step 3: Cross multiply
135,288,638.40x = 202,783,658.40 × 74,747,812.80 - Step 4: Simplify right side
135,288,638.40x = 15,157,634,936,982,348 - Step 5: Solve for x
x = 15,157,634,936,982,348/135,288,638.40 - Step 6: Final answer
x = 112,039,230.46
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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.