Finding the Fourth Proportional to 121,935.64, 168,277.71 and 68,217.43
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Solution
The fourth proportional to 121,935.64, 168,277.71 and 68,217.43 is: 94,143.70
Step by Step Solution
- Step 1: Write the proportion equation
121,935.64 : 168,277.71 = 68,217.43 : x - Step 2: Convert to fraction form
121,935.64/168,277.71 = 68,217.43/x - Step 3: Cross multiply
121,935.64x = 168,277.71 × 68,217.43 - Step 4: Simplify right side
121,935.64x = 11,479,472,902.49 - Step 5: Solve for x
x = 11,479,472,902.49/121,935.64 - Step 6: Final answer
x = 94,143.70
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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.