Finding the Fourth Proportional to 139,905.36, 209,812.68 and 46,386
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Solution
The fourth proportional to 139,905.36, 209,812.68 and 46,386 is: 69,563.96
Step by Step Solution
- Step 1: Write the proportion equation
139,905.36 : 209,812.68 = 46,386 : x - Step 2: Convert to fraction form
139,905.36/209,812.68 = 46,386/x - Step 3: Cross multiply
139,905.36x = 209,812.68 × 46,386 - Step 4: Simplify right side
139,905.36x = 9,732,370,974.48 - Step 5: Solve for x
x = 9,732,370,974.48/139,905.36 - Step 6: Final answer
x = 69,563.96
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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.