Finding the Fourth Proportional to 121,426.62, 167,568.76 and 71,125.62
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Solution
The fourth proportional to 121,426.62, 167,568.76 and 71,125.62 is: 98,153.37
Step by Step Solution
- Step 1: Write the proportion equation
121,426.62 : 167,568.76 = 71,125.62 : x - Step 2: Convert to fraction form
121,426.62/167,568.76 = 71,125.62/x - Step 3: Cross multiply
121,426.62x = 167,568.76 × 71,125.62 - Step 4: Simplify right side
121,426.62x = 11,918,431,947.63 - Step 5: Solve for x
x = 11,918,431,947.63/121,426.62 - Step 6: Final answer
x = 98,153.37
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1.5x scale
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.