Finding the Fourth Proportional to 143,558.73, 198,122.49 and 83,130.44
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Solution
The fourth proportional to 143,558.73, 198,122.49 and 83,130.44 is: 114,726.63
Step by Step Solution
- Step 1: Write the proportion equation
143,558.73 : 198,122.49 = 83,130.44 : x - Step 2: Convert to fraction form
143,558.73/198,122.49 = 83,130.44/x - Step 3: Cross multiply
143,558.73x = 198,122.49 × 83,130.44 - Step 4: Simplify right side
143,558.73x = 16,470,009,767.60 - Step 5: Solve for x
x = 16,470,009,767.60/143,558.73 - Step 6: Final answer
x = 114,726.63
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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.