Finding the Fourth Proportional to 131,838.08, 181,947.74 and 74,487.92
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Solution
The fourth proportional to 131,838.08, 181,947.74 and 74,487.92 is: 102,799.65
Step by Step Solution
- Step 1: Write the proportion equation
131,838.08 : 181,947.74 = 74,487.92 : x - Step 2: Convert to fraction form
131,838.08/181,947.74 = 74,487.92/x - Step 3: Cross multiply
131,838.08x = 181,947.74 × 74,487.92 - Step 4: Simplify right side
131,838.08x = 13,552,907,419.12 - Step 5: Solve for x
x = 13,552,907,419.12/131,838.08 - Step 6: Final answer
x = 102,799.65
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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.