Finding the Fourth Proportional to 122,039.28, 182,316.74 and 78,994.02
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Solution
The fourth proportional to 122,039.28, 182,316.74 and 78,994.02 is: 118,010.63
Step by Step Solution
- Step 1: Write the proportion equation
122,039.28 : 182,316.74 = 78,994.02 : x - Step 2: Convert to fraction form
122,039.28/182,316.74 = 78,994.02/x - Step 3: Cross multiply
122,039.28x = 182,316.74 × 78,994.02 - Step 4: Simplify right side
122,039.28x = 14,401,932,349.31 - Step 5: Solve for x
x = 14,401,932,349.31/122,039.28 - Step 6: Final answer
x = 118,010.63
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.