Finding the Fourth Proportional to 121,827.78, 168,124.41 and 68,107.02
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Solution
The fourth proportional to 121,827.78, 168,124.41 and 68,107.02 is: 93,988.85
Step by Step Solution
- Step 1: Write the proportion equation
121,827.78 : 168,124.41 = 68,107.02 : x - Step 2: Convert to fraction form
121,827.78/168,124.41 = 68,107.02/x - Step 3: Cross multiply
121,827.78x = 168,124.41 × 68,107.02 - Step 4: Simplify right side
121,827.78x = 11,450,452,554.36 - Step 5: Solve for x
x = 11,450,452,554.36/121,827.78 - Step 6: Final answer
x = 93,988.85
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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.