Finding the Fourth Proportional to 121,562.28, 167,685.84 and 73,130.58
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Solution
The fourth proportional to 121,562.28, 167,685.84 and 73,130.58 is: 100,878.03
Step by Step Solution
- Step 1: Write the proportion equation
121,562.28 : 167,685.84 = 73,130.58 : x - Step 2: Convert to fraction form
121,562.28/167,685.84 = 73,130.58/x - Step 3: Cross multiply
121,562.28x = 167,685.84 × 73,130.58 - Step 4: Simplify right side
121,562.28x = 12,262,962,736.99 - Step 5: Solve for x
x = 12,262,962,736.99/121,562.28 - Step 6: Final answer
x = 100,878.03
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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.