Finding the Fourth Proportional to 125,239.64, 172,837.74 and 74,282.54
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Solution
The fourth proportional to 125,239.64, 172,837.74 and 74,282.54 is: 102,514.08
Step by Step Solution
- Step 1: Write the proportion equation
125,239.64 : 172,837.74 = 74,282.54 : x - Step 2: Convert to fraction form
125,239.64/172,837.74 = 74,282.54/x - Step 3: Cross multiply
125,239.64x = 172,837.74 × 74,282.54 - Step 4: Simplify right side
125,239.64x = 12,838,826,335.06 - Step 5: Solve for x
x = 12,838,826,335.06/125,239.64 - Step 6: Final answer
x = 102,514.08
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1.5x scale
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.