Finding the Fourth Proportional to 126,202,321.80, 189,303,482.70 and 39,947,479.20
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Solution
The fourth proportional to 126,202,321.80, 189,303,482.70 and 39,947,479.20 is: 59,921,218.80
Step by Step Solution
- Step 1: Write the proportion equation
126,202,321.80 : 189,303,482.70 = 39,947,479.20 : x - Step 2: Convert to fraction form
126,202,321.80/189,303,482.70 = 39,947,479.20/x - Step 3: Cross multiply
126,202,321.80x = 189,303,482.70 × 39,947,479.20 - Step 4: Simplify right side
126,202,321.80x = 7,562,196,937,645,810 - Step 5: Solve for x
x = 7,562,196,937,645,810/126,202,321.80 - Step 6: Final answer
x = 59,921,218.80
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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.