Finding the Fourth Proportional to 115,985.06, 160,136.49 and 89,079.49
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Solution
The fourth proportional to 115,985.06, 160,136.49 and 89,079.49 is: 122,988.92
Step by Step Solution
- Step 1: Write the proportion equation
115,985.06 : 160,136.49 = 89,079.49 : x - Step 2: Convert to fraction form
115,985.06/160,136.49 = 89,079.49/x - Step 3: Cross multiply
115,985.06x = 160,136.49 × 89,079.49 - Step 4: Simplify right side
115,985.06x = 14,264,876,859.59 - Step 5: Solve for x
x = 14,264,876,859.59/115,985.06 - Step 6: Final answer
x = 122,988.92
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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.