Finding the Fourth Proportional to 136,126.09, 187,826.47 and 79,526.53
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Solution
The fourth proportional to 136,126.09, 187,826.47 and 79,526.53 is: 109,730.53
Step by Step Solution
- Step 1: Write the proportion equation
136,126.09 : 187,826.47 = 79,526.53 : x - Step 2: Convert to fraction form
136,126.09/187,826.47 = 79,526.53/x - Step 3: Cross multiply
136,126.09x = 187,826.47 × 79,526.53 - Step 4: Simplify right side
136,126.09x = 14,937,187,401.25 - Step 5: Solve for x
x = 14,937,187,401.25/136,126.09 - Step 6: Final answer
x = 109,730.53
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1.5x scale
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.