Finding the Fourth Proportional to 121,466.39, 167,550.12 and 78,378.44
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Solution
The fourth proportional to 121,466.39, 167,550.12 and 78,378.44 is: 108,114.82
Step by Step Solution
- Step 1: Write the proportion equation
121,466.39 : 167,550.12 = 78,378.44 : x - Step 2: Convert to fraction form
121,466.39/167,550.12 = 78,378.44/x - Step 3: Cross multiply
121,466.39x = 167,550.12 × 78,378.44 - Step 4: Simplify right side
121,466.39x = 13,132,316,189.66 - Step 5: Solve for x
x = 13,132,316,189.66/121,466.39 - Step 6: Final answer
x = 108,114.82
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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.