Finding the Fourth Proportional to 121,245,177.20, 181,867,765.80 and 72,872,236.40
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Solution
The fourth proportional to 121,245,177.20, 181,867,765.80 and 72,872,236.40 is: 109,308,354.60
Step by Step Solution
- Step 1: Write the proportion equation
121,245,177.20 : 181,867,765.80 = 72,872,236.40 : x - Step 2: Convert to fraction form
121,245,177.20/181,867,765.80 = 72,872,236.40/x - Step 3: Cross multiply
121,245,177.20x = 181,867,765.80 × 72,872,236.40 - Step 4: Simplify right side
121,245,177.20x = 13,253,110,822,917,438 - Step 5: Solve for x
x = 13,253,110,822,917,438/121,245,177.20 - Step 6: Final answer
x = 109,308,354.60
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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.