Finding the Fourth Proportional to 128,957.56, 193,437.42 and 40,207.48
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Solution
The fourth proportional to 128,957.56, 193,437.42 and 40,207.48 is: 60,311.56
Step by Step Solution
- Step 1: Write the proportion equation
128,957.56 : 193,437.42 = 40,207.48 : x - Step 2: Convert to fraction form
128,957.56/193,437.42 = 40,207.48/x - Step 3: Cross multiply
128,957.56x = 193,437.42 × 40,207.48 - Step 4: Simplify right side
128,957.56x = 7,777,631,195.90 - Step 5: Solve for x
x = 7,777,631,195.90/128,957.56 - Step 6: Final answer
x = 60,311.56
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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.