Finding the Fourth Proportional to 135,570.11, 187,043.97 and 78,201.73
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Solution
The fourth proportional to 135,570.11, 187,043.97 and 78,201.73 is: 107,893.70
Step by Step Solution
- Step 1: Write the proportion equation
135,570.11 : 187,043.97 = 78,201.73 : x - Step 2: Convert to fraction form
135,570.11/187,043.97 = 78,201.73/x - Step 3: Cross multiply
135,570.11x = 187,043.97 × 78,201.73 - Step 4: Simplify right side
135,570.11x = 14,627,161,572.46 - Step 5: Solve for x
x = 14,627,161,572.46/135,570.11 - Step 6: Final answer
x = 107,893.70
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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.