Finding the Fourth Proportional to 121,976.19, 168,329.43 and 68,267.12
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Solution
The fourth proportional to 121,976.19, 168,329.43 and 68,267.12 is: 94,209.90
Step by Step Solution
- Step 1: Write the proportion equation
121,976.19 : 168,329.43 = 68,267.12 : x - Step 2: Convert to fraction form
121,976.19/168,329.43 = 68,267.12/x - Step 3: Cross multiply
121,976.19x = 168,329.43 × 68,267.12 - Step 4: Simplify right side
121,976.19x = 11,491,364,555.69 - Step 5: Solve for x
x = 11,491,364,555.69/121,976.19 - Step 6: Final answer
x = 94,209.90
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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.