Finding the Fourth Proportional to 198,235,613.76, 273,572,822.88 and 135,642,917.76
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Solution
The fourth proportional to 198,235,613.76, 273,572,822.88 and 135,642,917.76 is: 187,192,478.75
Step by Step Solution
- Step 1: Write the proportion equation
198,235,613.76 : 273,572,822.88 = 135,642,917.76 : x - Step 2: Convert to fraction form
198,235,613.76/273,572,822.88 = 135,642,917.76/x - Step 3: Cross multiply
198,235,613.76x = 273,572,822.88 × 135,642,917.76 - Step 4: Simplify right side
198,235,613.76x = 37,108,215,915,282,880 - Step 5: Solve for x
x = 37,108,215,915,282,880/198,235,613.76 - Step 6: Final answer
x = 187,192,478.75
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1.5x scale
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.