Finding the Fourth Proportional to 122,741.81, 169,348.76 and 73,663.49
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Solution
The fourth proportional to 122,741.81, 169,348.76 and 73,663.49 is: 101,634.65
Step by Step Solution
- Step 1: Write the proportion equation
122,741.81 : 169,348.76 = 73,663.49 : x - Step 2: Convert to fraction form
122,741.81/169,348.76 = 73,663.49/x - Step 3: Cross multiply
122,741.81x = 169,348.76 × 73,663.49 - Step 4: Simplify right side
122,741.81x = 12,474,821,020.06 - Step 5: Solve for x
x = 12,474,821,020.06/122,741.81 - Step 6: Final answer
x = 101,634.65
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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.