Finding the Fourth Proportional to 100,912.08, 139,252.56 and 58,463.28
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Solution
The fourth proportional to 100,912.08, 139,252.56 and 58,463.28 is: 80,675.79
Step by Step Solution
- Step 1: Write the proportion equation
100,912.08 : 139,252.56 = 58,463.28 : x - Step 2: Convert to fraction form
100,912.08/139,252.56 = 58,463.28/x - Step 3: Cross multiply
100,912.08x = 139,252.56 × 58,463.28 - Step 4: Simplify right side
100,912.08x = 8,141,161,406.00 - Step 5: Solve for x
x = 8,141,161,406.00/100,912.08 - Step 6: Final answer
x = 80,675.79
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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.