Finding the Fourth Proportional to 136,637.40, 188,560.68 and 76,211.88
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Solution
The fourth proportional to 136,637.40, 188,560.68 and 76,211.88 is: 105,172.99
Step by Step Solution
- Step 1: Write the proportion equation
136,637.40 : 188,560.68 = 76,211.88 : x - Step 2: Convert to fraction form
136,637.40/188,560.68 = 76,211.88/x - Step 3: Cross multiply
136,637.40x = 188,560.68 × 76,211.88 - Step 4: Simplify right side
136,637.40x = 14,370,563,916.88 - Step 5: Solve for x
x = 14,370,563,916.88/136,637.40 - Step 6: Final answer
x = 105,172.99
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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.