Finding the Fourth Proportional to 122,368.62, 168,869.07 and 68,653.68
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Solution
The fourth proportional to 122,368.62, 168,869.07 and 68,653.68 is: 94,742.29
Step by Step Solution
- Step 1: Write the proportion equation
122,368.62 : 168,869.07 = 68,653.68 : x - Step 2: Convert to fraction form
122,368.62/168,869.07 = 68,653.68/x - Step 3: Cross multiply
122,368.62x = 168,869.07 × 68,653.68 - Step 4: Simplify right side
122,368.62x = 11,593,483,093.68 - Step 5: Solve for x
x = 11,593,483,093.68/122,368.62 - Step 6: Final answer
x = 94,742.29
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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.