Finding the Fourth Proportional to 122,136.09, 168,551.13 and 68,419.95
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Solution
The fourth proportional to 122,136.09, 168,551.13 and 68,419.95 is: 94,421.39
Step by Step Solution
- Step 1: Write the proportion equation
122,136.09 : 168,551.13 = 68,419.95 : x - Step 2: Convert to fraction form
122,136.09/168,551.13 = 68,419.95/x - Step 3: Cross multiply
122,136.09x = 168,551.13 × 68,419.95 - Step 4: Simplify right side
122,136.09x = 11,532,259,887.04 - Step 5: Solve for x
x = 11,532,259,887.04/122,136.09 - Step 6: Final answer
x = 94,421.39
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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.