Finding the Fourth Proportional to 121,172.06, 167,197.50 and 67,455.70
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Solution
The fourth proportional to 121,172.06, 167,197.50 and 67,455.70 is: 93,077.76
Step by Step Solution
- Step 1: Write the proportion equation
121,172.06 : 167,197.50 = 67,455.70 : x - Step 2: Convert to fraction form
121,172.06/167,197.50 = 67,455.70/x - Step 3: Cross multiply
121,172.06x = 167,197.50 × 67,455.70 - Step 4: Simplify right side
121,172.06x = 11,278,424,400.75 - Step 5: Solve for x
x = 11,278,424,400.75/121,172.06 - Step 6: Final answer
x = 93,077.76
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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.