Finding the Fourth Proportional to 121,445.36, 167,550.42 and 70,429.94
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Solution
The fourth proportional to 121,445.36, 167,550.42 and 70,429.94 is: 97,167.70
Step by Step Solution
- Step 1: Write the proportion equation
121,445.36 : 167,550.42 = 70,429.94 : x - Step 2: Convert to fraction form
121,445.36/167,550.42 = 70,429.94/x - Step 3: Cross multiply
121,445.36x = 167,550.42 × 70,429.94 - Step 4: Simplify right side
121,445.36x = 11,800,566,082.25 - Step 5: Solve for x
x = 11,800,566,082.25/121,445.36 - Step 6: Final answer
x = 97,167.70
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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.