Finding the Fourth Proportional to 122,739.14, 169,378.38 and 69,024.14
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Solution
The fourth proportional to 122,739.14, 169,378.38 and 69,024.14 is: 95,252.39
Step by Step Solution
- Step 1: Write the proportion equation
122,739.14 : 169,378.38 = 69,024.14 : x - Step 2: Convert to fraction form
122,739.14/169,378.38 = 69,024.14/x - Step 3: Cross multiply
122,739.14x = 169,378.38 × 69,024.14 - Step 4: Simplify right side
122,739.14x = 11,691,196,167.20 - Step 5: Solve for x
x = 11,691,196,167.20/122,739.14 - Step 6: Final answer
x = 95,252.39
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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.