Finding the Fourth Proportional to 131,405.10, 181,357.83 and 74,821.74
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Solution
The fourth proportional to 131,405.10, 181,357.83 and 74,821.74 is: 103,264.70
Step by Step Solution
- Step 1: Write the proportion equation
131,405.10 : 181,357.83 = 74,821.74 : x - Step 2: Convert to fraction form
131,405.10/181,357.83 = 74,821.74/x - Step 3: Cross multiply
131,405.10x = 181,357.83 × 74,821.74 - Step 4: Simplify right side
131,405.10x = 13,569,508,403.22 - Step 5: Solve for x
x = 13,569,508,403.22/131,405.10 - Step 6: Final answer
x = 103,264.70
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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.