Finding the Fourth Proportional to 131,978.62, 182,128.26 and 74,616.99
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Solution
The fourth proportional to 131,978.62, 182,128.26 and 74,616.99 is: 102,970.18
Step by Step Solution
- Step 1: Write the proportion equation
131,978.62 : 182,128.26 = 74,616.99 : x - Step 2: Convert to fraction form
131,978.62/182,128.26 = 74,616.99/x - Step 3: Cross multiply
131,978.62x = 182,128.26 × 74,616.99 - Step 4: Simplify right side
131,978.62x = 13,589,862,555.14 - Step 5: Solve for x
x = 13,589,862,555.14/131,978.62 - Step 6: Final answer
x = 102,970.18
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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.