Finding the Fourth Proportional to 128,688.93, 193,059.21 and 44,452.17
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Solution
The fourth proportional to 128,688.93, 193,059.21 and 44,452.17 is: 66,687.17
Step by Step Solution
- Step 1: Write the proportion equation
128,688.93 : 193,059.21 = 44,452.17 : x - Step 2: Convert to fraction form
128,688.93/193,059.21 = 44,452.17/x - Step 3: Cross multiply
128,688.93x = 193,059.21 × 44,452.17 - Step 4: Simplify right side
128,688.93x = 8,581,900,822.99 - Step 5: Solve for x
x = 8,581,900,822.99/128,688.93 - Step 6: Final answer
x = 66,687.17
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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.