Finding the Fourth Proportional to 102,921.30, 142,034.31 and 57,600.99
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Solution
The fourth proportional to 102,921.30, 142,034.31 and 57,600.99 is: 79,491.00
Step by Step Solution
- Step 1: Write the proportion equation
102,921.30 : 142,034.31 = 57,600.99 : x - Step 2: Convert to fraction form
102,921.30/142,034.31 = 57,600.99/x - Step 3: Cross multiply
102,921.30x = 142,034.31 × 57,600.99 - Step 4: Simplify right side
102,921.30x = 8,181,316,869.97 - Step 5: Solve for x
x = 8,181,316,869.97/102,921.30 - Step 6: Final answer
x = 79,491.00
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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.