Finding the Fourth Proportional to 128,328,318.20, 177,093,119.40 and 69,590,965.88
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Solution
The fourth proportional to 128,328,318.20, 177,093,119.40 and 69,590,965.88 is: 96,035,554.76
Step by Step Solution
- Step 1: Write the proportion equation
128,328,318.20 : 177,093,119.40 = 69,590,965.88 : x - Step 2: Convert to fraction form
128,328,318.20/177,093,119.40 = 69,590,965.88/x - Step 3: Cross multiply
128,328,318.20x = 177,093,119.40 × 69,590,965.88 - Step 4: Simplify right side
128,328,318.20x = 12,324,081,229,748,166 - Step 5: Solve for x
x = 12,324,081,229,748,166/128,328,318.20 - Step 6: Final answer
x = 96,035,554.76
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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.