Finding the Fourth Proportional to 121,893.28, 168,195.92 and 68,175.52
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Solution
The fourth proportional to 121,893.28, 168,195.92 and 68,175.52 is: 94,072.82
Step by Step Solution
- Step 1: Write the proportion equation
121,893.28 : 168,195.92 = 68,175.52 : x - Step 2: Convert to fraction form
121,893.28/168,195.92 = 68,175.52/x - Step 3: Cross multiply
121,893.28x = 168,195.92 × 68,175.52 - Step 4: Simplify right side
121,893.28x = 11,466,844,307.88 - Step 5: Solve for x
x = 11,466,844,307.88/121,893.28 - Step 6: Final answer
x = 94,072.82
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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.