Finding the Fourth Proportional to 129,934.22, 194,965.97 and 72,972.79
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Solution
The fourth proportional to 129,934.22, 194,965.97 and 72,972.79 is: 109,495.49
Step by Step Solution
- Step 1: Write the proportion equation
129,934.22 : 194,965.97 = 72,972.79 : x - Step 2: Convert to fraction form
129,934.22/194,965.97 = 72,972.79/x - Step 3: Cross multiply
129,934.22x = 194,965.97 × 72,972.79 - Step 4: Simplify right side
129,934.22x = 14,227,209,933.68 - Step 5: Solve for x
x = 14,227,209,933.68/129,934.22 - Step 6: Final answer
x = 109,495.49
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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.