Finding the Fourth Proportional to 121,857.65, 182,634.26 and 84,117.02
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Solution
The fourth proportional to 121,857.65, 182,634.26 and 84,117.02 is: 126,070.45
Step by Step Solution
- Step 1: Write the proportion equation
121,857.65 : 182,634.26 = 84,117.02 : x - Step 2: Convert to fraction form
121,857.65/182,634.26 = 84,117.02/x - Step 3: Cross multiply
121,857.65x = 182,634.26 × 84,117.02 - Step 4: Simplify right side
121,857.65x = 15,362,648,367.35 - Step 5: Solve for x
x = 15,362,648,367.35/121,857.65 - Step 6: Final answer
x = 126,070.45
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.