Finding the Fourth Proportional to 163,685.40, 225,912.84 and 103,289.08
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Solution
The fourth proportional to 163,685.40, 225,912.84 and 103,289.08 is: 142,555.96
Step by Step Solution
- Step 1: Write the proportion equation
163,685.40 : 225,912.84 = 103,289.08 : x - Step 2: Convert to fraction form
163,685.40/225,912.84 = 103,289.08/x - Step 3: Cross multiply
163,685.40x = 225,912.84 × 103,289.08 - Step 4: Simplify right side
163,685.40x = 23,334,329,403.79 - Step 5: Solve for x
x = 23,334,329,403.79/163,685.40 - Step 6: Final answer
x = 142,555.96
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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.