Finding the Fourth Proportional to 131,357.68, 181,274.74 and 74,772.68
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Solution
The fourth proportional to 131,357.68, 181,274.74 and 74,772.68 is: 103,186.95
Step by Step Solution
- Step 1: Write the proportion equation
131,357.68 : 181,274.74 = 74,772.68 : x - Step 2: Convert to fraction form
131,357.68/181,274.74 = 74,772.68/x - Step 3: Cross multiply
131,357.68x = 181,274.74 × 74,772.68 - Step 4: Simplify right side
131,357.68x = 13,554,398,126.10 - Step 5: Solve for x
x = 13,554,398,126.10/131,357.68 - Step 6: Final answer
x = 103,186.95
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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.