Finding the Fourth Proportional to 157,115.80, 235,673.70 and 122,080.60
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Solution
The fourth proportional to 157,115.80, 235,673.70 and 122,080.60 is: 183,120.90
Step by Step Solution
- Step 1: Write the proportion equation
157,115.80 : 235,673.70 = 122,080.60 : x - Step 2: Convert to fraction form
157,115.80/235,673.70 = 122,080.60/x - Step 3: Cross multiply
157,115.80x = 235,673.70 × 122,080.60 - Step 4: Simplify right side
157,115.80x = 28,771,186,700.22 - Step 5: Solve for x
x = 28,771,186,700.22/157,115.80 - Step 6: Final answer
x = 183,120.90
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.