Finding the Fourth Proportional to 121,129,702.81, 167,159,668.85 and 68,918,737.39
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Solution
The fourth proportional to 121,129,702.81, 167,159,668.85 and 68,918,737.39 is: 95,108,243.91
Step by Step Solution
- Step 1: Write the proportion equation
121,129,702.81 : 167,159,668.85 = 68,918,737.39 : x - Step 2: Convert to fraction form
121,129,702.81/167,159,668.85 = 68,918,737.39/x - Step 3: Cross multiply
121,129,702.81x = 167,159,668.85 × 68,918,737.39 - Step 4: Simplify right side
121,129,702.81x = 11,520,433,319,672,512 - Step 5: Solve for x
x = 11,520,433,319,672,512/121,129,702.81 - Step 6: Final answer
x = 95,108,243.91
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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.