Finding the Fourth Proportional to 138,746.08, 208,034.84 and 54,405.20
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Solution
The fourth proportional to 138,746.08, 208,034.84 and 54,405.20 is: 81,574.75
Step by Step Solution
- Step 1: Write the proportion equation
138,746.08 : 208,034.84 = 54,405.20 : x - Step 2: Convert to fraction form
138,746.08/208,034.84 = 54,405.20/x - Step 3: Cross multiply
138,746.08x = 208,034.84 × 54,405.20 - Step 4: Simplify right side
138,746.08x = 11,318,177,077.17 - Step 5: Solve for x
x = 11,318,177,077.17/138,746.08 - Step 6: Final answer
x = 81,574.75
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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.