Finding the Fourth Proportional to 121,785.88, 168,052.96 and 68,069.66
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Solution
The fourth proportional to 121,785.88, 168,052.96 and 68,069.66 is: 93,929.68
Step by Step Solution
- Step 1: Write the proportion equation
121,785.88 : 168,052.96 = 68,069.66 : x - Step 2: Convert to fraction form
121,785.88/168,052.96 = 68,069.66/x - Step 3: Cross multiply
121,785.88x = 168,052.96 × 68,069.66 - Step 4: Simplify right side
121,785.88x = 11,439,307,849.19 - Step 5: Solve for x
x = 11,439,307,849.19/121,785.88 - Step 6: Final answer
x = 93,929.68
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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.