Finding the Fourth Proportional to 138,840,450.99, 191,595,674.12 and 76,114,404.15
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Solution
The fourth proportional to 138,840,450.99, 191,595,674.12 and 76,114,404.15 is: 105,035,603.60
Step by Step Solution
- Step 1: Write the proportion equation
138,840,450.99 : 191,595,674.12 = 76,114,404.15 : x - Step 2: Convert to fraction form
138,840,450.99/191,595,674.12 = 76,114,404.15/x - Step 3: Cross multiply
138,840,450.99x = 191,595,674.12 × 76,114,404.15 - Step 4: Simplify right side
138,840,450.99x = 14,583,190,573,361,378 - Step 5: Solve for x
x = 14,583,190,573,361,378/138,840,450.99 - Step 6: Final answer
x = 105,035,603.60
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.