Finding the Fourth Proportional to 136,722,874.99, 205,077,077.45 and 38,361,431.20
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Solution
The fourth proportional to 136,722,874.99, 205,077,077.45 and 38,361,431.20 is: 57,540,116.81
Step by Step Solution
- Step 1: Write the proportion equation
136,722,874.99 : 205,077,077.45 = 38,361,431.20 : x - Step 2: Convert to fraction form
136,722,874.99/205,077,077.45 = 38,361,431.20/x - Step 3: Cross multiply
136,722,874.99x = 205,077,077.45 × 38,361,431.20 - Step 4: Simplify right side
136,722,874.99x = 7,867,050,197,876,545 - Step 5: Solve for x
x = 7,867,050,197,876,545/136,722,874.99 - Step 6: Final answer
x = 57,540,116.81
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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.