Finding the Fourth Proportional to 121,117,930.80, 181,460,383.20 and 73,708,144.80
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Solution
The fourth proportional to 121,117,930.80, 181,460,383.20 and 73,708,144.80 is: 110,430,454.95
Step by Step Solution
- Step 1: Write the proportion equation
121,117,930.80 : 181,460,383.20 = 73,708,144.80 : x - Step 2: Convert to fraction form
121,117,930.80/181,460,383.20 = 73,708,144.80/x - Step 3: Cross multiply
121,117,930.80x = 181,460,383.20 × 73,708,144.80 - Step 4: Simplify right side
121,117,930.80x = 13,375,108,200,369,086 - Step 5: Solve for x
x = 13,375,108,200,369,086/121,117,930.80 - Step 6: Final answer
x = 110,430,454.95
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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.