Finding the Fourth Proportional to 129,710.63, 193,276.53 and 115,561.96
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Solution
The fourth proportional to 129,710.63, 193,276.53 and 115,561.96 is: 172,194.17
Step by Step Solution
- Step 1: Write the proportion equation
129,710.63 : 193,276.53 = 115,561.96 : x - Step 2: Convert to fraction form
129,710.63/193,276.53 = 115,561.96/x - Step 3: Cross multiply
129,710.63x = 193,276.53 × 115,561.96 - Step 4: Simplify right side
129,710.63x = 22,335,414,628.80 - Step 5: Solve for x
x = 22,335,414,628.80/129,710.63 - Step 6: Final answer
x = 172,194.17
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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.