Finding the Fourth Proportional to 129,194.19, 193,828.95 and 79,306.29
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Solution
The fourth proportional to 129,194.19, 193,828.95 and 79,306.29 is: 118,982.56
Step by Step Solution
- Step 1: Write the proportion equation
129,194.19 : 193,828.95 = 79,306.29 : x - Step 2: Convert to fraction form
129,194.19/193,828.95 = 79,306.29/x - Step 3: Cross multiply
129,194.19x = 193,828.95 × 79,306.29 - Step 4: Simplify right side
129,194.19x = 15,371,854,919.10 - Step 5: Solve for x
x = 15,371,854,919.10/129,194.19 - Step 6: Final answer
x = 118,982.56
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1.5x scale
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.