Finding the Fourth Proportional to 138,611,757.87, 191,285,737.52 and 76,733,129.79
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Solution
The fourth proportional to 138,611,757.87, 191,285,737.52 and 76,733,129.79 is: 105,892,555.94
Step by Step Solution
- Step 1: Write the proportion equation
138,611,757.87 : 191,285,737.52 = 76,733,129.79 : x - Step 2: Convert to fraction form
138,611,757.87/191,285,737.52 = 76,733,129.79/x - Step 3: Cross multiply
138,611,757.87x = 191,285,737.52 × 76,733,129.79 - Step 4: Simplify right side
138,611,757.87x = 14,677,953,323,714,368 - Step 5: Solve for x
x = 14,677,953,323,714,368/138,611,757.87 - Step 6: Final answer
x = 105,892,555.94
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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.