Finding the Fourth Proportional to 138,331,706.32, 207,466,964.51 and 39,942,064.23
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Solution
The fourth proportional to 138,331,706.32, 207,466,964.51 and 39,942,064.23 is: 59,904,262.32
Step by Step Solution
- Step 1: Write the proportion equation
138,331,706.32 : 207,466,964.51 = 39,942,064.23 : x - Step 2: Convert to fraction form
138,331,706.32/207,466,964.51 = 39,942,064.23/x - Step 3: Cross multiply
138,331,706.32x = 207,466,964.51 × 39,942,064.23 - Step 4: Simplify right side
138,331,706.32x = 8,286,658,822,161,404 - Step 5: Solve for x
x = 8,286,658,822,161,404/138,331,706.32 - Step 6: Final answer
x = 59,904,262.32
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.