Finding the Fourth Proportional to 129,919.66, 194,805.06 and 39,938.98
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Solution
The fourth proportional to 129,919.66, 194,805.06 and 39,938.98 is: 59,885.59
Step by Step Solution
- Step 1: Write the proportion equation
129,919.66 : 194,805.06 = 39,938.98 : x - Step 2: Convert to fraction form
129,919.66/194,805.06 = 39,938.98/x - Step 3: Cross multiply
129,919.66x = 194,805.06 × 39,938.98 - Step 4: Simplify right side
129,919.66x = 7,780,315,395.24 - Step 5: Solve for x
x = 7,780,315,395.24/129,919.66 - Step 6: Final answer
x = 59,885.59
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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.