Finding the Fourth Proportional to 135,861.24, 187,488.52 and 79,261.68
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Solution
The fourth proportional to 135,861.24, 187,488.52 and 79,261.68 is: 109,381.12
Step by Step Solution
- Step 1: Write the proportion equation
135,861.24 : 187,488.52 = 79,261.68 : x - Step 2: Convert to fraction form
135,861.24/187,488.52 = 79,261.68/x - Step 3: Cross multiply
135,861.24x = 187,488.52 × 79,261.68 - Step 4: Simplify right side
135,861.24x = 14,860,655,075.91 - Step 5: Solve for x
x = 14,860,655,075.91/135,861.24 - Step 6: Final answer
x = 109,381.12
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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.