Finding the Fourth Proportional to 121,628.05, 167,846.65 and 67,913.03
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Solution
The fourth proportional to 121,628.05, 167,846.65 and 67,913.03 is: 93,719.95
Step by Step Solution
- Step 1: Write the proportion equation
121,628.05 : 167,846.65 = 67,913.03 : x - Step 2: Convert to fraction form
121,628.05/167,846.65 = 67,913.03/x - Step 3: Cross multiply
121,628.05x = 167,846.65 × 67,913.03 - Step 4: Simplify right side
121,628.05x = 11,398,974,826.68 - Step 5: Solve for x
x = 11,398,974,826.68/121,628.05 - Step 6: Final answer
x = 93,719.95
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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.