Finding the Fourth Proportional to 104,889.72, 144,709.84 and 68,611.88
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Solution
The fourth proportional to 104,889.72, 144,709.84 and 68,611.88 is: 94,659.55
Step by Step Solution
- Step 1: Write the proportion equation
104,889.72 : 144,709.84 = 68,611.88 : x - Step 2: Convert to fraction form
104,889.72/144,709.84 = 68,611.88/x - Step 3: Cross multiply
104,889.72x = 144,709.84 × 68,611.88 - Step 4: Simplify right side
104,889.72x = 9,928,814,003.42 - Step 5: Solve for x
x = 9,928,814,003.42/104,889.72 - Step 6: Final answer
x = 94,659.55
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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.