Finding the Fourth Proportional to 121,934.70, 168,270.64 and 68,219.70
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Solution
The fourth proportional to 121,934.70, 168,270.64 and 68,219.70 is: 94,143.61
Step by Step Solution
- Step 1: Write the proportion equation
121,934.70 : 168,270.64 = 68,219.70 : x - Step 2: Convert to fraction form
121,934.70/168,270.64 = 68,219.70/x - Step 3: Cross multiply
121,934.70x = 168,270.64 × 68,219.70 - Step 4: Simplify right side
121,934.70x = 11,479,372,916.43 - Step 5: Solve for x
x = 11,479,372,916.43/121,934.70 - Step 6: Final answer
x = 94,143.61
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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.