Finding the Fourth Proportional to 138,959.87, 207,941.55 and 120,304.08
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Solution
The fourth proportional to 138,959.87, 207,941.55 and 120,304.08 is: 180,024.76
Step by Step Solution
- Step 1: Write the proportion equation
138,959.87 : 207,941.55 = 120,304.08 : x - Step 2: Convert to fraction form
138,959.87/207,941.55 = 120,304.08/x - Step 3: Cross multiply
138,959.87x = 207,941.55 × 120,304.08 - Step 4: Simplify right side
138,959.87x = 25,016,216,415.38 - Step 5: Solve for x
x = 25,016,216,415.38/138,959.87 - Step 6: Final answer
x = 180,024.76
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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.