Finding the Fourth Proportional to 103,128.73, 142,326.35 and 57,805.99
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Solution
The fourth proportional to 103,128.73, 142,326.35 and 57,805.99 is: 79,777.14
Step by Step Solution
- Step 1: Write the proportion equation
103,128.73 : 142,326.35 = 57,805.99 : x - Step 2: Convert to fraction form
103,128.73/142,326.35 = 57,805.99/x - Step 3: Cross multiply
103,128.73x = 142,326.35 × 57,805.99 - Step 4: Simplify right side
103,128.73x = 8,227,315,353.54 - Step 5: Solve for x
x = 8,227,315,353.54/103,128.73 - Step 6: Final answer
x = 79,777.14
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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.