Finding the Fourth Proportional to 135,786,571.92, 187,401,425.40 and 76,257,651.12
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Solution
The fourth proportional to 135,786,571.92, 187,401,425.40 and 76,257,651.12 is: 105,244,519.51
Step by Step Solution
- Step 1: Write the proportion equation
135,786,571.92 : 187,401,425.40 = 76,257,651.12 : x - Step 2: Convert to fraction form
135,786,571.92/187,401,425.40 = 76,257,651.12/x - Step 3: Cross multiply
135,786,571.92x = 187,401,425.40 × 76,257,651.12 - Step 4: Simplify right side
135,786,571.92x = 14,290,792,517,543,908 - Step 5: Solve for x
x = 14,290,792,517,543,908/135,786,571.92 - Step 6: Final answer
x = 105,244,519.51
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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.