Finding the Fourth Proportional to 122,858.68, 184,215.30 and 47,891.31
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Solution
The fourth proportional to 122,858.68, 184,215.30 and 47,891.31 is: 71,808.62
Step by Step Solution
- Step 1: Write the proportion equation
122,858.68 : 184,215.30 = 47,891.31 : x - Step 2: Convert to fraction form
122,858.68/184,215.30 = 47,891.31/x - Step 3: Cross multiply
122,858.68x = 184,215.30 × 47,891.31 - Step 4: Simplify right side
122,858.68x = 8,822,312,039.04 - Step 5: Solve for x
x = 8,822,312,039.04/122,858.68 - Step 6: Final answer
x = 71,808.62
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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.