Finding the Fourth Proportional to 122,543,630.90, 183,815,446.35 and 54,393,211.70
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Solution
The fourth proportional to 122,543,630.90, 183,815,446.35 and 54,393,211.70 is: 81,589,817.55
Step by Step Solution
- Step 1: Write the proportion equation
122,543,630.90 : 183,815,446.35 = 54,393,211.70 : x - Step 2: Convert to fraction form
122,543,630.90/183,815,446.35 = 54,393,211.70/x - Step 3: Cross multiply
122,543,630.90x = 183,815,446.35 × 54,393,211.70 - Step 4: Simplify right side
122,543,630.90x = 9,998,312,487,045,542 - Step 5: Solve for x
x = 9,998,312,487,045,542/122,543,630.90 - Step 6: Final answer
x = 81,589,817.55
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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.