Finding the Fourth Proportional to 138,169,148.12, 190,593,492.30 and 89,276,576.12
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Solution
The fourth proportional to 138,169,148.12, 190,593,492.30 and 89,276,576.12 is: 123,150,027.74
Step by Step Solution
- Step 1: Write the proportion equation
138,169,148.12 : 190,593,492.30 = 89,276,576.12 : x - Step 2: Convert to fraction form
138,169,148.12/190,593,492.30 = 89,276,576.12/x - Step 3: Cross multiply
138,169,148.12x = 190,593,492.30 × 89,276,576.12 - Step 4: Simplify right side
138,169,148.12x = 17,015,534,423,297,586 - Step 5: Solve for x
x = 17,015,534,423,297,586/138,169,148.12 - Step 6: Final answer
x = 123,150,027.74
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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.