Finding the Fourth Proportional to 128,202,919.12, 192,496,484.94 and 110,984,230.72
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Solution
The fourth proportional to 128,202,919.12, 192,496,484.94 and 110,984,230.72 is: 166,642,650.92
Step by Step Solution
- Step 1: Write the proportion equation
128,202,919.12 : 192,496,484.94 = 110,984,230.72 : x - Step 2: Convert to fraction form
128,202,919.12/192,496,484.94 = 110,984,230.72/x - Step 3: Cross multiply
128,202,919.12x = 192,496,484.94 × 110,984,230.72 - Step 4: Simplify right side
128,202,919.12x = 21,364,074,297,819,236 - Step 5: Solve for x
x = 21,364,074,297,819,236/128,202,919.12 - Step 6: Final answer
x = 166,642,650.92
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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.