Finding the Fourth Proportional to 121,459.20, 167,613.92 and 67,747.70
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Solution
The fourth proportional to 121,459.20, 167,613.92 and 67,747.70 is: 93,491.95
Step by Step Solution
- Step 1: Write the proportion equation
121,459.20 : 167,613.92 = 67,747.70 : x - Step 2: Convert to fraction form
121,459.20/167,613.92 = 67,747.70/x - Step 3: Cross multiply
121,459.20x = 167,613.92 × 67,747.70 - Step 4: Simplify right side
121,459.20x = 11,355,457,340.59 - Step 5: Solve for x
x = 11,355,457,340.59/121,459.20 - Step 6: Final answer
x = 93,491.95
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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.