Finding the Fourth Proportional to 139,508.19, 208,314.79 and 135,724.79
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Solution
The fourth proportional to 139,508.19, 208,314.79 and 135,724.79 is: 202,665.39
Step by Step Solution
- Step 1: Write the proportion equation
139,508.19 : 208,314.79 = 135,724.79 : x - Step 2: Convert to fraction form
139,508.19/208,314.79 = 135,724.79/x - Step 3: Cross multiply
139,508.19x = 208,314.79 × 135,724.79 - Step 4: Simplify right side
139,508.19x = 28,273,481,126.64 - Step 5: Solve for x
x = 28,273,481,126.64/139,508.19 - Step 6: Final answer
x = 202,665.39
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.