Finding the Fourth Proportional to 154,573,420.80, 231,888,124.80 and 77,702,995.20
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Solution
The fourth proportional to 154,573,420.80, 231,888,124.80 and 77,702,995.20 is: 116,568,564.99
Step by Step Solution
- Step 1: Write the proportion equation
154,573,420.80 : 231,888,124.80 = 77,702,995.20 : x - Step 2: Convert to fraction form
154,573,420.80/231,888,124.80 = 77,702,995.20/x - Step 3: Cross multiply
154,573,420.80x = 231,888,124.80 × 77,702,995.20 - Step 4: Simplify right side
154,573,420.80x = 18,018,401,848,271,404 - Step 5: Solve for x
x = 18,018,401,848,271,404/154,573,420.80 - Step 6: Final answer
x = 116,568,564.99
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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.