Finding the Fourth Proportional to 124,876.92, 172,467.18 and 84,778.68
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Solution
The fourth proportional to 124,876.92, 172,467.18 and 84,778.68 is: 117,087.61
Step by Step Solution
- Step 1: Write the proportion equation
124,876.92 : 172,467.18 = 84,778.68 : x - Step 2: Convert to fraction form
124,876.92/172,467.18 = 84,778.68/x - Step 3: Cross multiply
124,876.92x = 172,467.18 × 84,778.68 - Step 4: Simplify right side
124,876.92x = 14,621,539,863.72 - Step 5: Solve for x
x = 14,621,539,863.72/124,876.92 - Step 6: Final answer
x = 117,087.61
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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.