Finding the Fourth Proportional to 129,972.60, 195,023.70 and 73,855.80
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Solution
The fourth proportional to 129,972.60, 195,023.70 and 73,855.80 is: 110,820.52
Step by Step Solution
- Step 1: Write the proportion equation
129,972.60 : 195,023.70 = 73,855.80 : x - Step 2: Convert to fraction form
129,972.60/195,023.70 = 73,855.80/x - Step 3: Cross multiply
129,972.60x = 195,023.70 × 73,855.80 - Step 4: Simplify right side
129,972.60x = 14,403,631,382.46 - Step 5: Solve for x
x = 14,403,631,382.46/129,972.60 - Step 6: Final answer
x = 110,820.52
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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.