Finding the Fourth Proportional to 135,791.16, 187,414.32 and 79,202.53
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Solution
The fourth proportional to 135,791.16, 187,414.32 and 79,202.53 is: 109,312.63
Step by Step Solution
- Step 1: Write the proportion equation
135,791.16 : 187,414.32 = 79,202.53 : x - Step 2: Convert to fraction form
135,791.16/187,414.32 = 79,202.53/x - Step 3: Cross multiply
135,791.16x = 187,414.32 × 79,202.53 - Step 4: Simplify right side
135,791.16x = 14,843,688,302.23 - Step 5: Solve for x
x = 14,843,688,302.23/135,791.16 - Step 6: Final answer
x = 109,312.63
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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.