Finding the Fourth Proportional to 129,088.65, 193,708.76 and 54,203.03
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Solution
The fourth proportional to 129,088.65, 193,708.76 and 54,203.03 is: 81,336.37
Step by Step Solution
- Step 1: Write the proportion equation
129,088.65 : 193,708.76 = 54,203.03 : x - Step 2: Convert to fraction form
129,088.65/193,708.76 = 54,203.03/x - Step 3: Cross multiply
129,088.65x = 193,708.76 × 54,203.03 - Step 4: Simplify right side
129,088.65x = 10,499,601,729.54 - Step 5: Solve for x
x = 10,499,601,729.54/129,088.65 - Step 6: Final answer
x = 81,336.37
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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.