Finding the Fourth Proportional to 143,947,630.36, 198,441,121.37 and 102,622,778.20
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Solution
The fourth proportional to 143,947,630.36, 198,441,121.37 and 102,622,778.20 is: 141,472,139.09
Step by Step Solution
- Step 1: Write the proportion equation
143,947,630.36 : 198,441,121.37 = 102,622,778.20 : x - Step 2: Convert to fraction form
143,947,630.36/198,441,121.37 = 102,622,778.20/x - Step 3: Cross multiply
143,947,630.36x = 198,441,121.37 × 102,622,778.20 - Step 4: Simplify right side
143,947,630.36x = 20,364,579,184,112,792 - Step 5: Solve for x
x = 20,364,579,184,112,792/143,947,630.36 - Step 6: Final answer
x = 141,472,139.09
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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.