Finding the Fourth Proportional to 129,587,879.20, 194,605,767.60 and 69,121,703.20
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Solution
The fourth proportional to 129,587,879.20, 194,605,767.60 and 69,121,703.20 is: 103,802,008.27
Step by Step Solution
- Step 1: Write the proportion equation
129,587,879.20 : 194,605,767.60 = 69,121,703.20 : x - Step 2: Convert to fraction form
129,587,879.20/194,605,767.60 = 69,121,703.20/x - Step 3: Cross multiply
129,587,879.20x = 194,605,767.60 × 69,121,703.20 - Step 4: Simplify right side
129,587,879.20x = 13,451,482,109,055,376 - Step 5: Solve for x
x = 13,451,482,109,055,376/129,587,879.20 - Step 6: Final answer
x = 103,802,008.27
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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.