Finding the Fourth Proportional to 221,737.68, 305,997.48 and 121,136.40
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Solution
The fourth proportional to 221,737.68, 305,997.48 and 121,136.40 is: 167,167.95
Step by Step Solution
- Step 1: Write the proportion equation
221,737.68 : 305,997.48 = 121,136.40 : x - Step 2: Convert to fraction form
221,737.68/305,997.48 = 121,136.40/x - Step 3: Cross multiply
221,737.68x = 305,997.48 × 121,136.40 - Step 4: Simplify right side
221,737.68x = 37,067,433,136.27 - Step 5: Solve for x
x = 37,067,433,136.27/221,737.68 - Step 6: Final answer
x = 167,167.95
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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.