Finding the Fourth Proportional to 132,739.61, 183,178.54 and 72,310.97
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Solution
The fourth proportional to 132,739.61, 183,178.54 and 72,310.97 is: 99,787.99
Step by Step Solution
- Step 1: Write the proportion equation
132,739.61 : 183,178.54 = 72,310.97 : x - Step 2: Convert to fraction form
132,739.61/183,178.54 = 72,310.97/x - Step 3: Cross multiply
132,739.61x = 183,178.54 × 72,310.97 - Step 4: Simplify right side
132,739.61x = 13,245,818,187.75 - Step 5: Solve for x
x = 13,245,818,187.75/132,739.61 - Step 6: Final answer
x = 99,787.99
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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.