Finding the Fourth Proportional to 131,361.14, 181,278.58 and 74,772.50
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Solution
The fourth proportional to 131,361.14, 181,278.58 and 74,772.50 is: 103,186.17
Step by Step Solution
- Step 1: Write the proportion equation
131,361.14 : 181,278.58 = 74,772.50 : x - Step 2: Convert to fraction form
131,361.14/181,278.58 = 74,772.50/x - Step 3: Cross multiply
131,361.14x = 181,278.58 × 74,772.50 - Step 4: Simplify right side
131,361.14x = 13,554,652,623.05 - Step 5: Solve for x
x = 13,554,652,623.05/131,361.14 - Step 6: Final answer
x = 103,186.17
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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.