Finding the Fourth Proportional to 136,130.87, 187,833.07 and 79,531.31
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Solution
The fourth proportional to 136,130.87, 187,833.07 and 79,531.31 is: 109,737.12
Step by Step Solution
- Step 1: Write the proportion equation
136,130.87 : 187,833.07 = 79,531.31 : x - Step 2: Convert to fraction form
136,130.87/187,833.07 = 79,531.31/x - Step 3: Cross multiply
136,130.87x = 187,833.07 × 79,531.31 - Step 4: Simplify right side
136,130.87x = 14,938,610,118.42 - Step 5: Solve for x
x = 14,938,610,118.42/136,130.87 - Step 6: Final answer
x = 109,737.12
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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.