Finding the Fourth Proportional to 122,777.97, 169,456.86 and 76,858.95
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Solution
The fourth proportional to 122,777.97, 169,456.86 and 76,858.95 is: 106,079.91
Step by Step Solution
- Step 1: Write the proportion equation
122,777.97 : 169,456.86 = 76,858.95 : x - Step 2: Convert to fraction form
122,777.97/169,456.86 = 76,858.95/x - Step 3: Cross multiply
122,777.97x = 169,456.86 × 76,858.95 - Step 4: Simplify right side
122,777.97x = 13,024,275,406.21 - Step 5: Solve for x
x = 13,024,275,406.21/122,777.97 - Step 6: Final answer
x = 106,079.91
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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.