Finding the Fourth Proportional to 112,995.17, 155,908.98 and 65,220.84
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Solution
The fourth proportional to 112,995.17, 155,908.98 and 65,220.84 is: 89,990.70
Step by Step Solution
- Step 1: Write the proportion equation
112,995.17 : 155,908.98 = 65,220.84 : x - Step 2: Convert to fraction form
112,995.17/155,908.98 = 65,220.84/x - Step 3: Cross multiply
112,995.17x = 155,908.98 × 65,220.84 - Step 4: Simplify right side
112,995.17x = 10,168,514,394.57 - Step 5: Solve for x
x = 10,168,514,394.57/112,995.17 - Step 6: Final answer
x = 89,990.70
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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.