Finding the Fourth Proportional to 138,219,126.19, 190,741,138.34 and 75,495,211.07
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Solution
The fourth proportional to 138,219,126.19, 190,741,138.34 and 75,495,211.07 is: 104,182,705.35
Step by Step Solution
- Step 1: Write the proportion equation
138,219,126.19 : 190,741,138.34 = 75,495,211.07 : x - Step 2: Convert to fraction form
138,219,126.19/190,741,138.34 = 75,495,211.07/x - Step 3: Cross multiply
138,219,126.19x = 190,741,138.34 × 75,495,211.07 - Step 4: Simplify right side
138,219,126.19x = 14,400,042,497,379,188 - Step 5: Solve for x
x = 14,400,042,497,379,188/138,219,126.19 - Step 6: Final answer
x = 104,182,705.35
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.