Finding the Fourth Proportional to 147,240,985.40, 203,201,650.91 and 81,161,334.84
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Solution
The fourth proportional to 147,240,985.40, 203,201,650.91 and 81,161,334.84 is: 112,007,653.21
Step by Step Solution
- Step 1: Write the proportion equation
147,240,985.40 : 203,201,650.91 = 81,161,334.84 : x - Step 2: Convert to fraction form
147,240,985.40/203,201,650.91 = 81,161,334.84/x - Step 3: Cross multiply
147,240,985.40x = 203,201,650.91 × 81,161,334.84 - Step 4: Simplify right side
147,240,985.40x = 16,492,117,229,750,204 - Step 5: Solve for x
x = 16,492,117,229,750,204/147,240,985.40 - Step 6: Final answer
x = 112,007,653.21
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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.