Finding the Fourth Proportional to 135,696.40, 187,138.50 and 84,713.82
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Solution
The fourth proportional to 135,696.40, 187,138.50 and 84,713.82 is: 116,828.58
Step by Step Solution
- Step 1: Write the proportion equation
135,696.40 : 187,138.50 = 84,713.82 : x - Step 2: Convert to fraction form
135,696.40/187,138.50 = 84,713.82/x - Step 3: Cross multiply
135,696.40x = 187,138.50 × 84,713.82 - Step 4: Simplify right side
135,696.40x = 15,853,217,204.07 - Step 5: Solve for x
x = 15,853,217,204.07/135,696.40 - Step 6: Final answer
x = 116,828.58
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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.