Finding the Fourth Proportional to 129,336.17, 193,628.61 and 79,264.80
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Solution
The fourth proportional to 129,336.17, 193,628.61 and 79,264.80 is: 118,666.99
Step by Step Solution
- Step 1: Write the proportion equation
129,336.17 : 193,628.61 = 79,264.80 : x - Step 2: Convert to fraction form
129,336.17/193,628.61 = 79,264.80/x - Step 3: Cross multiply
129,336.17x = 193,628.61 × 79,264.80 - Step 4: Simplify right side
129,336.17x = 15,347,933,045.93 - Step 5: Solve for x
x = 15,347,933,045.93/129,336.17 - Step 6: Final answer
x = 118,666.99
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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.