Finding the Fourth Proportional to 122,721.11, 169,351.77 and 69,004.75
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Solution
The fourth proportional to 122,721.11, 169,351.77 and 69,004.75 is: 95,224.66
Step by Step Solution
- Step 1: Write the proportion equation
122,721.11 : 169,351.77 = 69,004.75 : x - Step 2: Convert to fraction form
122,721.11/169,351.77 = 69,004.75/x - Step 3: Cross multiply
122,721.11x = 169,351.77 × 69,004.75 - Step 4: Simplify right side
122,721.11x = 11,686,075,445.38 - Step 5: Solve for x
x = 11,686,075,445.38/122,721.11 - Step 6: Final answer
x = 95,224.66
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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.