Finding the Fourth Proportional to 121,475.71, 167,625.97 and 78,457.07
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Solution
The fourth proportional to 121,475.71, 167,625.97 and 78,457.07 is: 108,263.97
Step by Step Solution
- Step 1: Write the proportion equation
121,475.71 : 167,625.97 = 78,457.07 : x - Step 2: Convert to fraction form
121,475.71/167,625.97 = 78,457.07/x - Step 3: Cross multiply
121,475.71x = 167,625.97 × 78,457.07 - Step 4: Simplify right side
121,475.71x = 13,151,442,685.03 - Step 5: Solve for x
x = 13,151,442,685.03/121,475.71 - Step 6: Final answer
x = 108,263.97
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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.