Finding the Fourth Proportional to 121,596.78, 167,806.35 and 76,276.65
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Solution
The fourth proportional to 121,596.78, 167,806.35 and 76,276.65 is: 105,263.53
Step by Step Solution
- Step 1: Write the proportion equation
121,596.78 : 167,806.35 = 76,276.65 : x - Step 2: Convert to fraction form
121,596.78/167,806.35 = 76,276.65/x - Step 3: Cross multiply
121,596.78x = 167,806.35 × 76,276.65 - Step 4: Simplify right side
121,596.78x = 12,799,706,226.73 - Step 5: Solve for x
x = 12,799,706,226.73/121,596.78 - Step 6: Final answer
x = 105,263.53
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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.