Finding the Fourth Proportional to 206,085,874.80, 309,128,812.20 and 125,464,306.80
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Solution
The fourth proportional to 206,085,874.80, 309,128,812.20 and 125,464,306.80 is: 188,196,460.20
Step by Step Solution
- Step 1: Write the proportion equation
206,085,874.80 : 309,128,812.20 = 125,464,306.80 : x - Step 2: Convert to fraction form
206,085,874.80/309,128,812.20 = 125,464,306.80/x - Step 3: Cross multiply
206,085,874.80x = 309,128,812.20 × 125,464,306.80 - Step 4: Simplify right side
206,085,874.80x = 38,784,632,134,580,384 - Step 5: Solve for x
x = 38,784,632,134,580,384/206,085,874.80 - Step 6: Final answer
x = 188,196,460.20
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1.5x scale
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.