Finding the Fourth Proportional to 102,837.10, 153,927.60 and 80,529.70
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Solution
The fourth proportional to 102,837.10, 153,927.60 and 80,529.70 is: 120,537.66
Step by Step Solution
- Step 1: Write the proportion equation
102,837.10 : 153,927.60 = 80,529.70 : x - Step 2: Convert to fraction form
102,837.10/153,927.60 = 80,529.70/x - Step 3: Cross multiply
102,837.10x = 153,927.60 × 80,529.70 - Step 4: Simplify right side
102,837.10x = 12,395,743,449.72 - Step 5: Solve for x
x = 12,395,743,449.72/102,837.10 - Step 6: Final answer
x = 120,537.66
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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.