Finding the Fourth Proportional to 149,883,918.75, 206,776,471.14 and 100,340,252.55
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Solution
The fourth proportional to 149,883,918.75, 206,776,471.14 and 100,340,252.55 is: 138,427,147.55
Step by Step Solution
- Step 1: Write the proportion equation
149,883,918.75 : 206,776,471.14 = 100,340,252.55 : x - Step 2: Convert to fraction form
149,883,918.75/206,776,471.14 = 100,340,252.55/x - Step 3: Cross multiply
149,883,918.75x = 206,776,471.14 × 100,340,252.55 - Step 4: Simplify right side
149,883,918.75x = 20,748,003,335,585,384 - Step 5: Solve for x
x = 20,748,003,335,585,384/149,883,918.75 - Step 6: Final answer
x = 138,427,147.55
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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.