Finding the Fourth Proportional to 129,769.88, 194,683.64 and 39,825.09
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Solution
The fourth proportional to 129,769.88, 194,683.64 and 39,825.09 is: 59,746.48
Step by Step Solution
- Step 1: Write the proportion equation
129,769.88 : 194,683.64 = 39,825.09 : x - Step 2: Convert to fraction form
129,769.88/194,683.64 = 39,825.09/x - Step 3: Cross multiply
129,769.88x = 194,683.64 × 39,825.09 - Step 4: Simplify right side
129,769.88x = 7,753,293,285.40 - Step 5: Solve for x
x = 7,753,293,285.40/129,769.88 - Step 6: Final answer
x = 59,746.48
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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.