Finding the Fourth Proportional to 138,251,014.40, 207,376,521.60 and 86,966,739.20
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Solution
The fourth proportional to 138,251,014.40, 207,376,521.60 and 86,966,739.20 is: 130,450,108.80
Step by Step Solution
- Step 1: Write the proportion equation
138,251,014.40 : 207,376,521.60 = 86,966,739.20 : x - Step 2: Convert to fraction form
138,251,014.40/207,376,521.60 = 86,966,739.20/x - Step 3: Cross multiply
138,251,014.40x = 207,376,521.60 × 86,966,739.20 - Step 4: Simplify right side
138,251,014.40x = 18,034,859,870,190,368 - Step 5: Solve for x
x = 18,034,859,870,190,368/138,251,014.40 - Step 6: Final answer
x = 130,450,108.80
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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.