Finding the Fourth Proportional to 147,121.49, 203,042.63 and 86,711.62
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Solution
The fourth proportional to 147,121.49, 203,042.63 and 86,711.62 is: 119,670.86
Step by Step Solution
- Step 1: Write the proportion equation
147,121.49 : 203,042.63 = 86,711.62 : x - Step 2: Convert to fraction form
147,121.49/203,042.63 = 86,711.62/x - Step 3: Cross multiply
147,121.49x = 203,042.63 × 86,711.62 - Step 4: Simplify right side
147,121.49x = 17,606,155,376.36 - Step 5: Solve for x
x = 17,606,155,376.36/147,121.49 - Step 6: Final answer
x = 119,670.86
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.