Finding the Fourth Proportional to 121,512,775.50, 167,688,141.48 and 65,758,198.62
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Solution
The fourth proportional to 121,512,775.50, 167,688,141.48 and 65,758,198.62 is: 90,746,590.79
Step by Step Solution
- Step 1: Write the proportion equation
121,512,775.50 : 167,688,141.48 = 65,758,198.62 : x - Step 2: Convert to fraction form
121,512,775.50/167,688,141.48 = 65,758,198.62/x - Step 3: Cross multiply
121,512,775.50x = 167,688,141.48 × 65,758,198.62 - Step 4: Simplify right side
121,512,775.50x = 11,026,870,113,660,500 - Step 5: Solve for x
x = 11,026,870,113,660,500/121,512,775.50 - Step 6: Final answer
x = 90,746,590.79
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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.