Finding the Fourth Proportional to 163,687.90, 245,448.82 and 74,865.31
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Solution
The fourth proportional to 163,687.90, 245,448.82 and 74,865.31 is: 112,259.99
Step by Step Solution
- Step 1: Write the proportion equation
163,687.90 : 245,448.82 = 74,865.31 : x - Step 2: Convert to fraction form
163,687.90/245,448.82 = 74,865.31/x - Step 3: Cross multiply
163,687.90x = 245,448.82 × 74,865.31 - Step 4: Simplify right side
163,687.90x = 18,375,601,998.43 - Step 5: Solve for x
x = 18,375,601,998.43/163,687.90 - Step 6: Final answer
x = 112,259.99
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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.