Finding the Fourth Proportional to 121,597.80, 167,756.73 and 81,247.65
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Solution
The fourth proportional to 121,597.80, 167,756.73 and 81,247.65 is: 112,089.53
Step by Step Solution
- Step 1: Write the proportion equation
121,597.80 : 167,756.73 = 81,247.65 : x - Step 2: Convert to fraction form
121,597.80/167,756.73 = 81,247.65/x - Step 3: Cross multiply
121,597.80x = 167,756.73 × 81,247.65 - Step 4: Simplify right side
121,597.80x = 13,629,840,084.18 - Step 5: Solve for x
x = 13,629,840,084.18/121,597.80 - Step 6: Final answer
x = 112,089.53
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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.