Finding the Fourth Proportional to 129,253.32, 193,879.98 and 40,513.68
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Solution
The fourth proportional to 129,253.32, 193,879.98 and 40,513.68 is: 60,770.52
Step by Step Solution
- Step 1: Write the proportion equation
129,253.32 : 193,879.98 = 40,513.68 : x - Step 2: Convert to fraction form
129,253.32/193,879.98 = 40,513.68/x - Step 3: Cross multiply
129,253.32x = 193,879.98 × 40,513.68 - Step 4: Simplify right side
129,253.32x = 7,854,791,468.13 - Step 5: Solve for x
x = 7,854,791,468.13/129,253.32 - Step 6: Final answer
x = 60,770.52
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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.