Finding the Fourth Proportional to 136,039.68, 187,733.76 and 76,423.68
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Solution
The fourth proportional to 136,039.68, 187,733.76 and 76,423.68 is: 105,464.12
Step by Step Solution
- Step 1: Write the proportion equation
136,039.68 : 187,733.76 = 76,423.68 : x - Step 2: Convert to fraction form
136,039.68/187,733.76 = 76,423.68/x - Step 3: Cross multiply
136,039.68x = 187,733.76 × 76,423.68 - Step 4: Simplify right side
136,039.68x = 14,347,304,799.44 - Step 5: Solve for x
x = 14,347,304,799.44/136,039.68 - Step 6: Final answer
x = 105,464.12
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.