Finding the Fourth Proportional to 122,083.49, 168,415.79 and 79,050.62
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Solution
The fourth proportional to 122,083.49, 168,415.79 and 79,050.62 is: 109,051.37
Step by Step Solution
- Step 1: Write the proportion equation
122,083.49 : 168,415.79 = 79,050.62 : x - Step 2: Convert to fraction form
122,083.49/168,415.79 = 79,050.62/x - Step 3: Cross multiply
122,083.49x = 168,415.79 × 79,050.62 - Step 4: Simplify right side
122,083.49x = 13,313,372,643.08 - Step 5: Solve for x
x = 13,313,372,643.08/122,083.49 - Step 6: Final answer
x = 109,051.37
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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.