Finding the Fourth Proportional to 91,561,138.90, 137,341,708.35 and 84,546,117.70
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Solution
The fourth proportional to 91,561,138.90, 137,341,708.35 and 84,546,117.70 is: 126,819,176.55
Step by Step Solution
- Step 1: Write the proportion equation
91,561,138.90 : 137,341,708.35 = 84,546,117.70 : x - Step 2: Convert to fraction form
91,561,138.90/137,341,708.35 = 84,546,117.70/x - Step 3: Cross multiply
91,561,138.90x = 137,341,708.35 × 84,546,117.70 - Step 4: Simplify right side
91,561,138.90x = 11,611,708,239,278,172 - Step 5: Solve for x
x = 11,611,708,239,278,172/91,561,138.90 - Step 6: Final answer
x = 126,819,176.55
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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.