Finding the Fourth Proportional to 128,686.93, 193,056.21 and 44,450.17
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Solution
The fourth proportional to 128,686.93, 193,056.21 and 44,450.17 is: 66,684.17
Step by Step Solution
- Step 1: Write the proportion equation
128,686.93 : 193,056.21 = 44,450.17 : x - Step 2: Convert to fraction form
128,686.93/193,056.21 = 44,450.17/x - Step 3: Cross multiply
128,686.93x = 193,056.21 × 44,450.17 - Step 4: Simplify right side
128,686.93x = 8,581,380,871.42 - Step 5: Solve for x
x = 8,581,380,871.42/128,686.93 - Step 6: Final answer
x = 66,684.17
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.