Finding the Fourth Proportional to 129,032.40, 193,644.60 and 66,670.80
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Solution
The fourth proportional to 129,032.40, 193,644.60 and 66,670.80 is: 100,055.80
Step by Step Solution
- Step 1: Write the proportion equation
129,032.40 : 193,644.60 = 66,670.80 : x - Step 2: Convert to fraction form
129,032.40/193,644.60 = 66,670.80/x - Step 3: Cross multiply
129,032.40x = 193,644.60 × 66,670.80 - Step 4: Simplify right side
129,032.40x = 12,910,440,397.68 - Step 5: Solve for x
x = 12,910,440,397.68/129,032.40 - Step 6: Final answer
x = 100,055.80
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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.