Finding the Fourth Proportional to 122,272.08, 168,771.48 and 79,837.20
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Solution
The fourth proportional to 122,272.08, 168,771.48 and 79,837.20 is: 110,198.85
Step by Step Solution
- Step 1: Write the proportion equation
122,272.08 : 168,771.48 = 79,837.20 : x - Step 2: Convert to fraction form
122,272.08/168,771.48 = 79,837.20/x - Step 3: Cross multiply
122,272.08x = 168,771.48 × 79,837.20 - Step 4: Simplify right side
122,272.08x = 13,474,242,403.06 - Step 5: Solve for x
x = 13,474,242,403.06/122,272.08 - Step 6: Final answer
x = 110,198.85
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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.