Finding the Fourth Proportional to 121,770.34, 168,042.50 and 68,055.30
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Solution
The fourth proportional to 121,770.34, 168,042.50 and 68,055.30 is: 93,916.00
Step by Step Solution
- Step 1: Write the proportion equation
121,770.34 : 168,042.50 = 68,055.30 : x - Step 2: Convert to fraction form
121,770.34/168,042.50 = 68,055.30/x - Step 3: Cross multiply
121,770.34x = 168,042.50 × 68,055.30 - Step 4: Simplify right side
121,770.34x = 11,436,182,750.25 - Step 5: Solve for x
x = 11,436,182,750.25/121,770.34 - Step 6: Final answer
x = 93,916.00
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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.