Finding the Fourth Proportional to 138,866.75, 208,335.65 and 40,370.75
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Solution
The fourth proportional to 138,866.75, 208,335.65 and 40,370.75 is: 60,566.45
Step by Step Solution
- Step 1: Write the proportion equation
138,866.75 : 208,335.65 = 40,370.75 : x - Step 2: Convert to fraction form
138,866.75/208,335.65 = 40,370.75/x - Step 3: Cross multiply
138,866.75x = 208,335.65 × 40,370.75 - Step 4: Simplify right side
138,866.75x = 8,410,666,442.24 - Step 5: Solve for x
x = 8,410,666,442.24/138,866.75 - Step 6: Final answer
x = 60,566.45
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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.