Finding the Fourth Proportional to 128,812.23, 193,193.73 and 40,066.80
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Solution
The fourth proportional to 128,812.23, 193,193.73 and 40,066.80 is: 60,092.54
Step by Step Solution
- Step 1: Write the proportion equation
128,812.23 : 193,193.73 = 40,066.80 : x - Step 2: Convert to fraction form
128,812.23/193,193.73 = 40,066.80/x - Step 3: Cross multiply
128,812.23x = 193,193.73 × 40,066.80 - Step 4: Simplify right side
128,812.23x = 7,740,654,541.16 - Step 5: Solve for x
x = 7,740,654,541.16/128,812.23 - Step 6: Final answer
x = 60,092.54
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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.