Finding the Fourth Proportional to 128,204,518.50, 176,922,391.05 and 69,467,138.19
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Solution
The fourth proportional to 128,204,518.50, 176,922,391.05 and 69,467,138.19 is: 95,864,734.97
Step by Step Solution
- Step 1: Write the proportion equation
128,204,518.50 : 176,922,391.05 = 69,467,138.19 : x - Step 2: Convert to fraction form
128,204,518.50/176,922,391.05 = 69,467,138.19/x - Step 3: Cross multiply
128,204,518.50x = 176,922,391.05 × 69,467,138.19 - Step 4: Simplify right side
128,204,518.50x = 12,290,292,187,975,570 - Step 5: Solve for x
x = 12,290,292,187,975,570/128,204,518.50 - Step 6: Final answer
x = 95,864,734.97
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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.