Finding the Fourth Proportional to 129,088.15, 193,708.01 and 54,202.54
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Solution
The fourth proportional to 129,088.15, 193,708.01 and 54,202.54 is: 81,335.62
Step by Step Solution
- Step 1: Write the proportion equation
129,088.15 : 193,708.01 = 54,202.54 : x - Step 2: Convert to fraction form
129,088.15/193,708.01 = 54,202.54/x - Step 3: Cross multiply
129,088.15x = 193,708.01 × 54,202.54 - Step 4: Simplify right side
129,088.15x = 10,499,464,920.79 - Step 5: Solve for x
x = 10,499,464,920.79/129,088.15 - Step 6: Final answer
x = 81,335.62
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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.