Finding the Fourth Proportional to 143,580.63, 198,141.26 and 79,917.06
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Solution
The fourth proportional to 143,580.63, 198,141.26 and 79,917.06 is: 110,285.53
Step by Step Solution
- Step 1: Write the proportion equation
143,580.63 : 198,141.26 = 79,917.06 : x - Step 2: Convert to fraction form
143,580.63/198,141.26 = 79,917.06/x - Step 3: Cross multiply
143,580.63x = 198,141.26 × 79,917.06 - Step 4: Simplify right side
143,580.63x = 15,834,866,564.31 - Step 5: Solve for x
x = 15,834,866,564.31/143,580.63 - Step 6: Final answer
x = 110,285.53
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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.