Finding the Fourth Proportional to 121,716.52, 167,962.98 and 68,000.68
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Solution
The fourth proportional to 121,716.52, 167,962.98 and 68,000.68 is: 93,837.69
Step by Step Solution
- Step 1: Write the proportion equation
121,716.52 : 167,962.98 = 68,000.68 : x - Step 2: Convert to fraction form
121,716.52/167,962.98 = 68,000.68/x - Step 3: Cross multiply
121,716.52x = 167,962.98 × 68,000.68 - Step 4: Simplify right side
121,716.52x = 11,421,596,854.83 - Step 5: Solve for x
x = 11,421,596,854.83/121,716.52 - Step 6: Final answer
x = 93,837.69
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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.