Finding the Fourth Proportional to 129,700.73, 193,261.79 and 115,552.06
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Solution
The fourth proportional to 129,700.73, 193,261.79 and 115,552.06 is: 172,179.43
Step by Step Solution
- Step 1: Write the proportion equation
129,700.73 : 193,261.79 = 115,552.06 : x - Step 2: Convert to fraction form
129,700.73/193,261.79 = 115,552.06/x - Step 3: Cross multiply
129,700.73x = 193,261.79 × 115,552.06 - Step 4: Simplify right side
129,700.73x = 22,331,797,759.51 - Step 5: Solve for x
x = 22,331,797,759.51/129,700.73 - Step 6: Final answer
x = 172,179.43
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.