Finding the Fourth Proportional to 138,809,111.02, 206,972,677.36 and 134,995,440.62
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Solution
The fourth proportional to 138,809,111.02, 206,972,677.36 and 134,995,440.62 is: 201,286,266.95
Step by Step Solution
- Step 1: Write the proportion equation
138,809,111.02 : 206,972,677.36 = 134,995,440.62 : x - Step 2: Convert to fraction form
138,809,111.02/206,972,677.36 = 134,995,440.62/x - Step 3: Cross multiply
138,809,111.02x = 206,972,677.36 × 134,995,440.62 - Step 4: Simplify right side
138,809,111.02x = 27,940,367,776,514,300 - Step 5: Solve for x
x = 27,940,367,776,514,300/138,809,111.02 - Step 6: Final answer
x = 201,286,266.95
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1.5x scale
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.