Finding the Fourth Proportional to 187,138.98, 280,709.69 and 74,828.63
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Solution
The fourth proportional to 187,138.98, 280,709.69 and 74,828.63 is: 112,243.43
Step by Step Solution
- Step 1: Write the proportion equation
187,138.98 : 280,709.69 = 74,828.63 : x - Step 2: Convert to fraction form
187,138.98/280,709.69 = 74,828.63/x - Step 3: Cross multiply
187,138.98x = 280,709.69 × 74,828.63 - Step 4: Simplify right side
187,138.98x = 21,005,121,858.06 - Step 5: Solve for x
x = 21,005,121,858.06/187,138.98 - Step 6: Final answer
x = 112,243.43
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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.