Finding the Fourth Proportional to 121,411.80, 167,356.80 and 91,153.44
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Solution
The fourth proportional to 121,411.80, 167,356.80 and 91,153.44 is: 125,647.99
Step by Step Solution
- Step 1: Write the proportion equation
121,411.80 : 167,356.80 = 91,153.44 : x - Step 2: Convert to fraction form
121,411.80/167,356.80 = 91,153.44/x - Step 3: Cross multiply
121,411.80x = 167,356.80 × 91,153.44 - Step 4: Simplify right side
121,411.80x = 15,255,148,027.39 - Step 5: Solve for x
x = 15,255,148,027.39/121,411.80 - Step 6: Final answer
x = 125,647.99
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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.