Finding the Fourth Proportional to 129,135.21, 193,707.19 and 34,365.49
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Solution
The fourth proportional to 129,135.21, 193,707.19 and 34,365.49 is: 51,549.39
Step by Step Solution
- Step 1: Write the proportion equation
129,135.21 : 193,707.19 = 34,365.49 : x - Step 2: Convert to fraction form
129,135.21/193,707.19 = 34,365.49/x - Step 3: Cross multiply
129,135.21x = 193,707.19 × 34,365.49 - Step 4: Simplify right side
129,135.21x = 6,656,841,360.51 - Step 5: Solve for x
x = 6,656,841,360.51/129,135.21 - Step 6: Final answer
x = 51,549.39
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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.