Finding the Fourth Proportional to 143,690.38, 198,292.61 and 83,296.08
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Solution
The fourth proportional to 143,690.38, 198,292.61 and 83,296.08 is: 114,948.53
Step by Step Solution
- Step 1: Write the proportion equation
143,690.38 : 198,292.61 = 83,296.08 : x - Step 2: Convert to fraction form
143,690.38/198,292.61 = 83,296.08/x - Step 3: Cross multiply
143,690.38x = 198,292.61 × 83,296.08 - Step 4: Simplify right side
143,690.38x = 16,516,997,314.21 - Step 5: Solve for x
x = 16,516,997,314.21/143,690.38 - Step 6: Final answer
x = 114,948.53
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.