Finding the Fourth Proportional to 121,996.11, 168,354.62 and 68,281.13
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Solution
The fourth proportional to 121,996.11, 168,354.62 and 68,281.13 is: 94,227.95
Step by Step Solution
- Step 1: Write the proportion equation
121,996.11 : 168,354.62 = 68,281.13 : x - Step 2: Convert to fraction form
121,996.11/168,354.62 = 68,281.13/x - Step 3: Cross multiply
121,996.11x = 168,354.62 × 68,281.13 - Step 4: Simplify right side
121,996.11x = 11,495,443,694.32 - Step 5: Solve for x
x = 11,495,443,694.32/121,996.11 - Step 6: Final answer
x = 94,227.95
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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.