Finding the Fourth Proportional to 138,917.08, 208,302.72 and 72,194.14
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Solution
The fourth proportional to 138,917.08, 208,302.72 and 72,194.14 is: 108,253.32
Step by Step Solution
- Step 1: Write the proportion equation
138,917.08 : 208,302.72 = 72,194.14 : x - Step 2: Convert to fraction form
138,917.08/208,302.72 = 72,194.14/x - Step 3: Cross multiply
138,917.08x = 208,302.72 × 72,194.14 - Step 4: Simplify right side
138,917.08x = 15,038,235,730.06 - Step 5: Solve for x
x = 15,038,235,730.06/138,917.08 - Step 6: Final answer
x = 108,253.32
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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.