Finding the Fourth Proportional to 122,691.69, 183,963.18 and 80,028.99
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Solution
The fourth proportional to 122,691.69, 183,963.18 and 80,028.99 is: 119,994.98
Step by Step Solution
- Step 1: Write the proportion equation
122,691.69 : 183,963.18 = 80,028.99 : x - Step 2: Convert to fraction form
122,691.69/183,963.18 = 80,028.99/x - Step 3: Cross multiply
122,691.69x = 183,963.18 × 80,028.99 - Step 4: Simplify right side
122,691.69x = 14,722,387,492.59 - Step 5: Solve for x
x = 14,722,387,492.59/122,691.69 - Step 6: Final answer
x = 119,994.98
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.