Finding the Fourth Proportional to 157,137.58, 216,845.70 and 85,516.06
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Solution
The fourth proportional to 157,137.58, 216,845.70 and 85,516.06 is: 118,009.90
Step by Step Solution
- Step 1: Write the proportion equation
157,137.58 : 216,845.70 = 85,516.06 : x - Step 2: Convert to fraction form
157,137.58/216,845.70 = 85,516.06/x - Step 3: Cross multiply
157,137.58x = 216,845.70 × 85,516.06 - Step 4: Simplify right side
157,137.58x = 18,543,789,842.31 - Step 5: Solve for x
x = 18,543,789,842.31/157,137.58 - Step 6: Final answer
x = 118,009.90
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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.