Finding the Fourth Proportional to 138,452,987.44, 191,123,953.05 and 86,267,806.66
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Solution
The fourth proportional to 138,452,987.44, 191,123,953.05 and 86,267,806.66 is: 119,086,229.45
Step by Step Solution
- Step 1: Write the proportion equation
138,452,987.44 : 191,123,953.05 = 86,267,806.66 : x - Step 2: Convert to fraction form
138,452,987.44/191,123,953.05 = 86,267,806.66/x - Step 3: Cross multiply
138,452,987.44x = 191,123,953.05 × 86,267,806.66 - Step 4: Simplify right side
138,452,987.44x = 16,487,844,229,812,318 - Step 5: Solve for x
x = 16,487,844,229,812,318/138,452,987.44 - Step 6: Final answer
x = 119,086,229.45
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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.