Finding the Fourth Proportional to 97,471,647.90, 146,207,471.85 and 78,339,771.90
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Solution
The fourth proportional to 97,471,647.90, 146,207,471.85 and 78,339,771.90 is: 117,509,657.85
Step by Step Solution
- Step 1: Write the proportion equation
97,471,647.90 : 146,207,471.85 = 78,339,771.90 : x - Step 2: Convert to fraction form
97,471,647.90/146,207,471.85 = 78,339,771.90/x - Step 3: Cross multiply
97,471,647.90x = 146,207,471.85 × 78,339,771.90 - Step 4: Simplify right side
97,471,647.90x = 11,453,859,994,804,672 - Step 5: Solve for x
x = 11,453,859,994,804,672/97,471,647.90 - Step 6: Final answer
x = 117,509,657.85
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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.