Finding the Fourth Proportional to 91,561,159.90, 137,341,739.85 and 84,546,138.70
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Solution
The fourth proportional to 91,561,159.90, 137,341,739.85 and 84,546,138.70 is: 126,819,208.05
Step by Step Solution
- Step 1: Write the proportion equation
91,561,159.90 : 137,341,739.85 = 84,546,138.70 : x - Step 2: Convert to fraction form
91,561,159.90/137,341,739.85 = 84,546,138.70/x - Step 3: Cross multiply
91,561,159.90x = 137,341,739.85 × 84,546,138.70 - Step 4: Simplify right side
91,561,159.90x = 11,611,713,786,657,418 - Step 5: Solve for x
x = 11,611,713,786,657,418/91,561,159.90 - Step 6: Final answer
x = 126,819,208.05
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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.