Finding the Fourth Proportional to 138,611,757.62, 191,285,737.17 and 76,733,129.54
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Solution
The fourth proportional to 138,611,757.62, 191,285,737.17 and 76,733,129.54 is: 105,892,555.59
Step by Step Solution
- Step 1: Write the proportion equation
138,611,757.62 : 191,285,737.17 = 76,733,129.54 : x - Step 2: Convert to fraction form
138,611,757.62/191,285,737.17 = 76,733,129.54/x - Step 3: Cross multiply
138,611,757.62x = 191,285,737.17 × 76,733,129.54 - Step 4: Simplify right side
138,611,757.62x = 14,677,953,249,420,004 - Step 5: Solve for x
x = 14,677,953,249,420,004/138,611,757.62 - Step 6: Final answer
x = 105,892,555.59
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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.