Finding the Fourth Proportional to 212,537,639.18, 318,907,235.74 and 126,446,121.74
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Solution
The fourth proportional to 212,537,639.18, 318,907,235.74 and 126,446,121.74 is: 189,729,138.38
Step by Step Solution
- Step 1: Write the proportion equation
212,537,639.18 : 318,907,235.74 = 126,446,121.74 : x - Step 2: Convert to fraction form
212,537,639.18/318,907,235.74 = 126,446,121.74/x - Step 3: Cross multiply
212,537,639.18x = 318,907,235.74 × 126,446,121.74 - Step 4: Simplify right side
212,537,639.18x = 40,324,583,154,146,920 - Step 5: Solve for x
x = 40,324,583,154,146,920/212,537,639.18 - Step 6: Final answer
x = 189,729,138.38
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.