Finding the Fourth Proportional to 138,137,113.50, 190,629,825.49 and 76,257,960.54
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Solution
The fourth proportional to 138,137,113.50, 190,629,825.49 and 76,257,960.54 is: 105,236,321.66
Step by Step Solution
- Step 1: Write the proportion equation
138,137,113.50 : 190,629,825.49 = 76,257,960.54 : x - Step 2: Convert to fraction form
138,137,113.50/190,629,825.49 = 76,257,960.54/x - Step 3: Cross multiply
138,137,113.50x = 190,629,825.49 × 76,257,960.54 - Step 4: Simplify right side
138,137,113.50x = 14,537,041,709,343,966 - Step 5: Solve for x
x = 14,537,041,709,343,966/138,137,113.50 - Step 6: Final answer
x = 105,236,321.66
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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.