Finding the Fourth Proportional to 128,325,673.20, 192,488,509.80 and 94,313,449.20
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Solution
The fourth proportional to 128,325,673.20, 192,488,509.80 and 94,313,449.20 is: 141,470,173.80
Step by Step Solution
- Step 1: Write the proportion equation
128,325,673.20 : 192,488,509.80 = 94,313,449.20 : x - Step 2: Convert to fraction form
128,325,673.20/192,488,509.80 = 94,313,449.20/x - Step 3: Cross multiply
128,325,673.20x = 192,488,509.80 × 94,313,449.20 - Step 4: Simplify right side
128,325,673.20x = 18,154,255,290,606,004 - Step 5: Solve for x
x = 18,154,255,290,606,004/128,325,673.20 - Step 6: Final answer
x = 141,470,173.80
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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.