Finding the Fourth Proportional to 126,448.08, 189,723.12 and 56,279.40
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Solution
The fourth proportional to 126,448.08, 189,723.12 and 56,279.40 is: 84,441.80
Step by Step Solution
- Step 1: Write the proportion equation
126,448.08 : 189,723.12 = 56,279.40 : x - Step 2: Convert to fraction form
126,448.08/189,723.12 = 56,279.40/x - Step 3: Cross multiply
126,448.08x = 189,723.12 × 56,279.40 - Step 4: Simplify right side
126,448.08x = 10,677,503,359.73 - Step 5: Solve for x
x = 10,677,503,359.73/126,448.08 - Step 6: Final answer
x = 84,441.80
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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.