Finding the Fourth Proportional to 156,199.19, 215,554.57 and 84,578.99
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Solution
The fourth proportional to 156,199.19, 215,554.57 and 84,578.99 is: 116,718.83
Step by Step Solution
- Step 1: Write the proportion equation
156,199.19 : 215,554.57 = 84,578.99 : x - Step 2: Convert to fraction form
156,199.19/215,554.57 = 84,578.99/x - Step 3: Cross multiply
156,199.19x = 215,554.57 × 84,578.99 - Step 4: Simplify right side
156,199.19x = 18,231,386,531.26 - Step 5: Solve for x
x = 18,231,386,531.26/156,199.19 - Step 6: Final answer
x = 116,718.83
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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.