Finding the Fourth Proportional to 122,811,381.50, 169,459,701.68 and 72,568,608.75
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Solution
The fourth proportional to 122,811,381.50, 169,459,701.68 and 72,568,608.75 is: 100,132,859.35
Step by Step Solution
- Step 1: Write the proportion equation
122,811,381.50 : 169,459,701.68 = 72,568,608.75 : x - Step 2: Convert to fraction form
122,811,381.50/169,459,701.68 = 72,568,608.75/x - Step 3: Cross multiply
122,811,381.50x = 169,459,701.68 × 72,568,608.75 - Step 4: Simplify right side
122,811,381.50x = 12,297,454,790,289,060 - Step 5: Solve for x
x = 12,297,454,790,289,060/122,811,381.50 - Step 6: Final answer
x = 100,132,859.35
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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.