Finding the Fourth Proportional to 112,226.09, 168,415.36 and 45,678.31
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Solution
The fourth proportional to 112,226.09, 168,415.36 and 45,678.31 is: 68,548.49
Step by Step Solution
- Step 1: Write the proportion equation
112,226.09 : 168,415.36 = 45,678.31 : x - Step 2: Convert to fraction form
112,226.09/168,415.36 = 45,678.31/x - Step 3: Cross multiply
112,226.09x = 168,415.36 × 45,678.31 - Step 4: Simplify right side
112,226.09x = 7,692,928,487.61 - Step 5: Solve for x
x = 7,692,928,487.61/112,226.09 - Step 6: Final answer
x = 68,548.49
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1.5x scale
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.