Finding the Fourth Proportional to 149,471,438.16, 206,265,907.98 and 87,632,963.40
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Solution
The fourth proportional to 149,471,438.16, 206,265,907.98 and 87,632,963.40 is: 120,930,747.62
Step by Step Solution
- Step 1: Write the proportion equation
149,471,438.16 : 206,265,907.98 = 87,632,963.40 : x - Step 2: Convert to fraction form
149,471,438.16/206,265,907.98 = 87,632,963.40/x - Step 3: Cross multiply
149,471,438.16x = 206,265,907.98 × 87,632,963.40 - Step 4: Simplify right side
149,471,438.16x = 18,075,692,764,679,108 - Step 5: Solve for x
x = 18,075,692,764,679,108/149,471,438.16 - Step 6: Final answer
x = 120,930,747.62
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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.