Finding the Fourth Proportional to 124,939.74, 172,420.91 and 68,351.12
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Solution
The fourth proportional to 124,939.74, 172,420.91 and 68,351.12 is: 94,326.77
Step by Step Solution
- Step 1: Write the proportion equation
124,939.74 : 172,420.91 = 68,351.12 : x - Step 2: Convert to fraction form
124,939.74/172,420.91 = 68,351.12/x - Step 3: Cross multiply
124,939.74x = 172,420.91 × 68,351.12 - Step 4: Simplify right side
124,939.74x = 11,785,162,309.92 - Step 5: Solve for x
x = 11,785,162,309.92/124,939.74 - Step 6: Final answer
x = 94,326.77
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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.