Finding the Fourth Proportional to 129,026,908.80, 193,540,363.20 and 38,142,403.20
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Solution
The fourth proportional to 129,026,908.80, 193,540,363.20 and 38,142,403.20 is: 57,213,604.80
Step by Step Solution
- Step 1: Write the proportion equation
129,026,908.80 : 193,540,363.20 = 38,142,403.20 : x - Step 2: Convert to fraction form
129,026,908.80/193,540,363.20 = 38,142,403.20/x - Step 3: Cross multiply
129,026,908.80x = 193,540,363.20 × 38,142,403.20 - Step 4: Simplify right side
129,026,908.80x = 7,382,094,568,648,842 - Step 5: Solve for x
x = 7,382,094,568,648,842/129,026,908.80 - Step 6: Final answer
x = 57,213,604.80
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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.