Finding the Fourth Proportional to 126,911,207.80, 190,366,811.70 and 31,173,095.80
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Solution
The fourth proportional to 126,911,207.80, 190,366,811.70 and 31,173,095.80 is: 46,759,643.70
Step by Step Solution
- Step 1: Write the proportion equation
126,911,207.80 : 190,366,811.70 = 31,173,095.80 : x - Step 2: Convert to fraction form
126,911,207.80/190,366,811.70 = 31,173,095.80/x - Step 3: Cross multiply
126,911,207.80x = 190,366,811.70 × 31,173,095.80 - Step 4: Simplify right side
126,911,207.80x = 5,934,322,858,264,661 - Step 5: Solve for x
x = 5,934,322,858,264,661/126,911,207.80 - Step 6: Final answer
x = 46,759,643.70
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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.