Finding the Fourth Proportional to 157,934.18, 217,942.62 and 86,316.68
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Solution
The fourth proportional to 157,934.18, 217,942.62 and 86,316.68 is: 119,113.44
Step by Step Solution
- Step 1: Write the proportion equation
157,934.18 : 217,942.62 = 86,316.68 : x - Step 2: Convert to fraction form
157,934.18/217,942.62 = 86,316.68/x - Step 3: Cross multiply
157,934.18x = 217,942.62 × 86,316.68 - Step 4: Simplify right side
157,934.18x = 18,812,083,388.90 - Step 5: Solve for x
x = 18,812,083,388.90/157,934.18 - Step 6: Final answer
x = 119,113.44
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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.