Finding the Fourth Proportional to 171,522.63, 257,371.74 and 81,666.99
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Solution
The fourth proportional to 171,522.63, 257,371.74 and 81,666.99 is: 122,542.29
Step by Step Solution
- Step 1: Write the proportion equation
171,522.63 : 257,371.74 = 81,666.99 : x - Step 2: Convert to fraction form
171,522.63/257,371.74 = 81,666.99/x - Step 3: Cross multiply
171,522.63x = 257,371.74 × 81,666.99 - Step 4: Simplify right side
171,522.63x = 21,018,775,316.86 - Step 5: Solve for x
x = 21,018,775,316.86/171,522.63 - Step 6: Final answer
x = 122,542.29
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.