Finding the Fourth Proportional to 138,116.95, 207,185.87 and 38,275.99
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Solution
The fourth proportional to 138,116.95, 207,185.87 and 38,275.99 is: 57,416.88
Step by Step Solution
- Step 1: Write the proportion equation
138,116.95 : 207,185.87 = 38,275.99 : x - Step 2: Convert to fraction form
138,116.95/207,185.87 = 38,275.99/x - Step 3: Cross multiply
138,116.95x = 207,185.87 × 38,275.99 - Step 4: Simplify right side
138,116.95x = 7,930,244,288.26 - Step 5: Solve for x
x = 7,930,244,288.26/138,116.95 - Step 6: Final answer
x = 57,416.88
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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.