Finding the Fourth Proportional to 121,926.69, 168,266.84 and 68,220.99
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Solution
The fourth proportional to 121,926.69, 168,266.84 and 68,220.99 is: 94,149.44
Step by Step Solution
- Step 1: Write the proportion equation
121,926.69 : 168,266.84 = 68,220.99 : x - Step 2: Convert to fraction form
121,926.69/168,266.84 = 68,220.99/x - Step 3: Cross multiply
121,926.69x = 168,266.84 × 68,220.99 - Step 4: Simplify right side
121,926.69x = 11,479,330,067.87 - Step 5: Solve for x
x = 11,479,330,067.87/121,926.69 - Step 6: Final answer
x = 94,149.44
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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.