Finding the Fourth Proportional to 122,151.40, 168,579.16 and 67,716.88
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Solution
The fourth proportional to 122,151.40, 168,579.16 and 67,716.88 is: 93,454.96
Step by Step Solution
- Step 1: Write the proportion equation
122,151.40 : 168,579.16 = 67,716.88 : x - Step 2: Convert to fraction form
122,151.40/168,579.16 = 67,716.88/x - Step 3: Cross multiply
122,151.40x = 168,579.16 × 67,716.88 - Step 4: Simplify right side
122,151.40x = 11,415,654,748.22 - Step 5: Solve for x
x = 11,415,654,748.22/122,151.40 - Step 6: Final answer
x = 93,454.96
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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.