Finding the Fourth Proportional to 129,813.90, 194,753.25 and 36,318.84
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Solution
The fourth proportional to 129,813.90, 194,753.25 and 36,318.84 is: 54,487.32
Step by Step Solution
- Step 1: Write the proportion equation
129,813.90 : 194,753.25 = 36,318.84 : x - Step 2: Convert to fraction form
129,813.90/194,753.25 = 36,318.84/x - Step 3: Cross multiply
129,813.90x = 194,753.25 × 36,318.84 - Step 4: Simplify right side
129,813.90x = 7,073,212,126.23 - Step 5: Solve for x
x = 7,073,212,126.23/129,813.90 - Step 6: Final answer
x = 54,487.32
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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.