Finding the Fourth Proportional to 157,603,694.20, 235,767,812.10 and 138,471,818.20
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Solution
The fourth proportional to 157,603,694.20, 235,767,812.10 and 138,471,818.20 is: 207,147,413.52
Step by Step Solution
- Step 1: Write the proportion equation
157,603,694.20 : 235,767,812.10 = 138,471,818.20 : x - Step 2: Convert to fraction form
157,603,694.20/235,767,812.10 = 138,471,818.20/x - Step 3: Cross multiply
157,603,694.20x = 235,767,812.10 × 138,471,818.20 - Step 4: Simplify right side
157,603,694.20x = 32,647,197,614,522,956 - Step 5: Solve for x
x = 32,647,197,614,522,956/157,603,694.20 - Step 6: Final answer
x = 207,147,413.52
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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.