Finding the Fourth Proportional to 138,251,796.40, 207,377,694.60 and 86,967,521.20
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Solution
The fourth proportional to 138,251,796.40, 207,377,694.60 and 86,967,521.20 is: 130,451,281.80
Step by Step Solution
- Step 1: Write the proportion equation
138,251,796.40 : 207,377,694.60 = 86,967,521.20 : x - Step 2: Convert to fraction form
138,251,796.40/207,377,694.60 = 86,967,521.20/x - Step 3: Cross multiply
138,251,796.40x = 207,377,694.60 × 86,967,521.20 - Step 4: Simplify right side
138,251,796.40x = 18,035,124,051,532,624 - Step 5: Solve for x
x = 18,035,124,051,532,624/138,251,796.40 - Step 6: Final answer
x = 130,451,281.80
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.