Finding the Fourth Proportional to 135,859.29, 187,508.16 and 79,270.53
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Solution
The fourth proportional to 135,859.29, 187,508.16 and 79,270.53 is: 109,406.37
Step by Step Solution
- Step 1: Write the proportion equation
135,859.29 : 187,508.16 = 79,270.53 : x - Step 2: Convert to fraction form
135,859.29/187,508.16 = 79,270.53/x - Step 3: Cross multiply
135,859.29x = 187,508.16 × 79,270.53 - Step 4: Simplify right side
135,859.29x = 14,863,871,222.52 - Step 5: Solve for x
x = 14,863,871,222.52/135,859.29 - Step 6: Final answer
x = 109,406.37
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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.