Finding the Fourth Proportional to 135,890.44, 187,530.11 and 79,290.88
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Solution
The fourth proportional to 135,890.44, 187,530.11 and 79,290.88 is: 109,422.17
Step by Step Solution
- Step 1: Write the proportion equation
135,890.44 : 187,530.11 = 79,290.88 : x - Step 2: Convert to fraction form
135,890.44/187,530.11 = 79,290.88/x - Step 3: Cross multiply
135,890.44x = 187,530.11 × 79,290.88 - Step 4: Simplify right side
135,890.44x = 14,869,427,448.40 - Step 5: Solve for x
x = 14,869,427,448.40/135,890.44 - Step 6: Final answer
x = 109,422.17
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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.