Finding the Fourth Proportional to 128,186.08, 176,896.40 and 71,596.96
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Solution
The fourth proportional to 128,186.08, 176,896.40 and 71,596.96 is: 98,803.59
Step by Step Solution
- Step 1: Write the proportion equation
128,186.08 : 176,896.40 = 71,596.96 : x - Step 2: Convert to fraction form
128,186.08/176,896.40 = 71,596.96/x - Step 3: Cross multiply
128,186.08x = 176,896.40 × 71,596.96 - Step 4: Simplify right side
128,186.08x = 12,665,244,474.94 - Step 5: Solve for x
x = 12,665,244,474.94/128,186.08 - Step 6: Final answer
x = 98,803.59
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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.