Finding the Fourth Proportional to 122,678.07, 169,424.25 and 84,536.79
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Solution
The fourth proportional to 122,678.07, 169,424.25 and 84,536.79 is: 116,749.33
Step by Step Solution
- Step 1: Write the proportion equation
122,678.07 : 169,424.25 = 84,536.79 : x - Step 2: Convert to fraction form
122,678.07/169,424.25 = 84,536.79/x - Step 3: Cross multiply
122,678.07x = 169,424.25 × 84,536.79 - Step 4: Simplify right side
122,678.07x = 14,322,582,243.16 - Step 5: Solve for x
x = 14,322,582,243.16/122,678.07 - Step 6: Final answer
x = 116,749.33
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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.