Finding the Fourth Proportional to 157,882.42, 217,875.16 and 86,260.90
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Solution
The fourth proportional to 157,882.42, 217,875.16 and 86,260.90 is: 119,038.63
Step by Step Solution
- Step 1: Write the proportion equation
157,882.42 : 217,875.16 = 86,260.90 : x - Step 2: Convert to fraction form
157,882.42/217,875.16 = 86,260.90/x - Step 3: Cross multiply
157,882.42x = 217,875.16 × 86,260.90 - Step 4: Simplify right side
157,882.42x = 18,794,107,389.24 - Step 5: Solve for x
x = 18,794,107,389.24/157,882.42 - Step 6: Final answer
x = 119,038.63
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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.