Finding the Fourth Proportional to 131,631.86, 181,651.98 and 74,283.32
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Solution
The fourth proportional to 131,631.86, 181,651.98 and 74,283.32 is: 102,510.99
Step by Step Solution
- Step 1: Write the proportion equation
131,631.86 : 181,651.98 = 74,283.32 : x - Step 2: Convert to fraction form
131,631.86/181,651.98 = 74,283.32/x - Step 3: Cross multiply
131,631.86x = 181,651.98 × 74,283.32 - Step 4: Simplify right side
131,631.86x = 13,493,712,158.97 - Step 5: Solve for x
x = 13,493,712,158.97/131,631.86 - Step 6: Final answer
x = 102,510.99
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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.