Finding the Fourth Proportional to 138,809,088.51, 206,972,643.83 and 134,995,418.07
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Solution
The fourth proportional to 138,809,088.51, 206,972,643.83 and 134,995,418.07 is: 201,286,233.37
Step by Step Solution
- Step 1: Write the proportion equation
138,809,088.51 : 206,972,643.83 = 134,995,418.07 : x - Step 2: Convert to fraction form
138,809,088.51/206,972,643.83 = 134,995,418.07/x - Step 3: Cross multiply
138,809,088.51x = 206,972,643.83 × 134,995,418.07 - Step 4: Simplify right side
138,809,088.51x = 27,940,358,583,221,544 - Step 5: Solve for x
x = 27,940,358,583,221,544/138,809,088.51 - Step 6: Final answer
x = 201,286,233.37
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.