Finding the Fourth Proportional to 121,768.11, 168,040.98 and 68,055.39
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Solution
The fourth proportional to 121,768.11, 168,040.98 and 68,055.39 is: 93,916.99
Step by Step Solution
- Step 1: Write the proportion equation
121,768.11 : 168,040.98 = 68,055.39 : x - Step 2: Convert to fraction form
121,768.11/168,040.98 = 68,055.39/x - Step 3: Cross multiply
121,768.11x = 168,040.98 × 68,055.39 - Step 4: Simplify right side
121,768.11x = 11,436,094,429.88 - Step 5: Solve for x
x = 11,436,094,429.88/121,768.11 - Step 6: Final answer
x = 93,916.99
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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.