Finding the Fourth Proportional to 126,819,993.60, 190,288,972.80 and 66,304,051.20
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Solution
The fourth proportional to 126,819,993.60, 190,288,972.80 and 66,304,051.20 is: 99,486,913.99
Step by Step Solution
- Step 1: Write the proportion equation
126,819,993.60 : 190,288,972.80 = 66,304,051.20 : x - Step 2: Convert to fraction form
126,819,993.60/190,288,972.80 = 66,304,051.20/x - Step 3: Cross multiply
126,819,993.60x = 190,288,972.80 × 66,304,051.20 - Step 4: Simplify right side
126,819,993.60x = 12,616,929,795,326,608 - Step 5: Solve for x
x = 12,616,929,795,326,608/126,819,993.60 - Step 6: Final answer
x = 99,486,913.99
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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.