Finding the Fourth Proportional to 121,920.87, 168,244.02 and 68,195.52
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Solution
The fourth proportional to 121,920.87, 168,244.02 and 68,195.52 is: 94,106.02
Step by Step Solution
- Step 1: Write the proportion equation
121,920.87 : 168,244.02 = 68,195.52 : x - Step 2: Convert to fraction form
121,920.87/168,244.02 = 68,195.52/x - Step 3: Cross multiply
121,920.87x = 168,244.02 × 68,195.52 - Step 4: Simplify right side
121,920.87x = 11,473,488,430.79 - Step 5: Solve for x
x = 11,473,488,430.79/121,920.87 - Step 6: Final answer
x = 94,106.02
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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.