Finding the Fourth Proportional to 122,490.18, 182,991.11 and 77,758.74
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Solution
The fourth proportional to 122,490.18, 182,991.11 and 77,758.74 is: 116,165.70
Step by Step Solution
- Step 1: Write the proportion equation
122,490.18 : 182,991.11 = 77,758.74 : x - Step 2: Convert to fraction form
122,490.18/182,991.11 = 77,758.74/x - Step 3: Cross multiply
122,490.18x = 182,991.11 × 77,758.74 - Step 4: Simplify right side
122,490.18x = 14,229,157,756.01 - Step 5: Solve for x
x = 14,229,157,756.01/122,490.18 - Step 6: Final answer
x = 116,165.70
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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.