Finding the Fourth Proportional to 99,337.68, 137,136.80 and 76,625.69
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Solution
The fourth proportional to 99,337.68, 137,136.80 and 76,625.69 is: 105,782.63
Step by Step Solution
- Step 1: Write the proportion equation
99,337.68 : 137,136.80 = 76,625.69 : x - Step 2: Convert to fraction form
99,337.68/137,136.80 = 76,625.69/x - Step 3: Cross multiply
99,337.68x = 137,136.80 × 76,625.69 - Step 4: Simplify right side
99,337.68x = 10,508,200,855.58 - Step 5: Solve for x
x = 10,508,200,855.58/99,337.68 - Step 6: Final answer
x = 105,782.63
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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.