Finding the Fourth Proportional to 138,611,761.87, 191,285,743.04 and 76,733,133.79
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Solution
The fourth proportional to 138,611,761.87, 191,285,743.04 and 76,733,133.79 is: 105,892,561.46
Step by Step Solution
- Step 1: Write the proportion equation
138,611,761.87 : 191,285,743.04 = 76,733,133.79 : x - Step 2: Convert to fraction form
138,611,761.87/191,285,743.04 = 76,733,133.79/x - Step 3: Cross multiply
138,611,761.87x = 191,285,743.04 × 76,733,133.79 - Step 4: Simplify right side
138,611,761.87x = 14,677,954,512,424,216 - Step 5: Solve for x
x = 14,677,954,512,424,216/138,611,761.87 - Step 6: Final answer
x = 105,892,561.46
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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.