Finding the Fourth Proportional to 129,904.20, 194,815.80 and 51,042.60
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Solution
The fourth proportional to 129,904.20, 194,815.80 and 51,042.60 is: 76,547.99
Step by Step Solution
- Step 1: Write the proportion equation
129,904.20 : 194,815.80 = 51,042.60 : x - Step 2: Convert to fraction form
129,904.20/194,815.80 = 51,042.60/x - Step 3: Cross multiply
129,904.20x = 194,815.80 × 51,042.60 - Step 4: Simplify right side
129,904.20x = 9,943,904,953.08 - Step 5: Solve for x
x = 9,943,904,953.08/129,904.20 - Step 6: Final answer
x = 76,547.99
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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.