Finding the Fourth Proportional to 122,143.74, 168,563.19 and 68,429.19
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Solution
The fourth proportional to 122,143.74, 168,563.19 and 68,429.19 is: 94,434.99
Step by Step Solution
- Step 1: Write the proportion equation
122,143.74 : 168,563.19 = 68,429.19 : x - Step 2: Convert to fraction form
122,143.74/168,563.19 = 68,429.19/x - Step 3: Cross multiply
122,143.74x = 168,563.19 × 68,429.19 - Step 4: Simplify right side
122,143.74x = 11,534,642,555.52 - Step 5: Solve for x
x = 11,534,642,555.52/122,143.74 - Step 6: Final answer
x = 94,434.99
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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.