Finding the Fourth Proportional to 129,932.36, 194,916.99 and 39,982.52
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Solution
The fourth proportional to 129,932.36, 194,916.99 and 39,982.52 is: 59,979.46
Step by Step Solution
- Step 1: Write the proportion equation
129,932.36 : 194,916.99 = 39,982.52 : x - Step 2: Convert to fraction form
129,932.36/194,916.99 = 39,982.52/x - Step 3: Cross multiply
129,932.36x = 194,916.99 × 39,982.52 - Step 4: Simplify right side
129,932.36x = 7,793,272,451.01 - Step 5: Solve for x
x = 7,793,272,451.01/129,932.36 - Step 6: Final answer
x = 59,979.46
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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.