Finding the Fourth Proportional to 157,137.19, 216,845.16 and 85,515.68
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Solution
The fourth proportional to 157,137.19, 216,845.16 and 85,515.68 is: 118,009.37
Step by Step Solution
- Step 1: Write the proportion equation
157,137.19 : 216,845.16 = 85,515.68 : x - Step 2: Convert to fraction form
157,137.19/216,845.16 = 85,515.68/x - Step 3: Cross multiply
157,137.19x = 216,845.16 × 85,515.68 - Step 4: Simplify right side
157,137.19x = 18,543,660,227.88 - Step 5: Solve for x
x = 18,543,660,227.88/157,137.19 - Step 6: Final answer
x = 118,009.37
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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.