Finding the Fourth Proportional to 129,928.90, 194,893.83 and 39,970.99
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Solution
The fourth proportional to 129,928.90, 194,893.83 and 39,970.99 is: 59,956.63
Step by Step Solution
- Step 1: Write the proportion equation
129,928.90 : 194,893.83 = 39,970.99 : x - Step 2: Convert to fraction form
129,928.90/194,893.83 = 39,970.99/x - Step 3: Cross multiply
129,928.90x = 194,893.83 × 39,970.99 - Step 4: Simplify right side
129,928.90x = 7,790,099,329.99 - Step 5: Solve for x
x = 7,790,099,329.99/129,928.90 - Step 6: Final answer
x = 59,956.63
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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.