Finding the Fourth Proportional to 129,417.08, 194,126.84 and 40,668.60
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Solution
The fourth proportional to 129,417.08, 194,126.84 and 40,668.60 is: 61,003.28
Step by Step Solution
- Step 1: Write the proportion equation
129,417.08 : 194,126.84 = 40,668.60 : x - Step 2: Convert to fraction form
129,417.08/194,126.84 = 40,668.60/x - Step 3: Cross multiply
129,417.08x = 194,126.84 × 40,668.60 - Step 4: Simplify right side
129,417.08x = 7,894,866,805.22 - Step 5: Solve for x
x = 7,894,866,805.22/129,417.08 - Step 6: Final answer
x = 61,003.28
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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.