Finding the Fourth Proportional to 155,906,874.36, 215,148,876.84 and 86,290,764.84
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Solution
The fourth proportional to 155,906,874.36, 215,148,876.84 and 86,290,764.84 is: 119,079,811.03
Step by Step Solution
- Step 1: Write the proportion equation
155,906,874.36 : 215,148,876.84 = 86,290,764.84 : x - Step 2: Convert to fraction form
155,906,874.36/215,148,876.84 = 86,290,764.84/x - Step 3: Cross multiply
155,906,874.36x = 215,148,876.84 × 86,290,764.84 - Step 4: Simplify right side
155,906,874.36x = 18,565,361,136,990,564 - Step 5: Solve for x
x = 18,565,361,136,990,564/155,906,874.36 - Step 6: Final answer
x = 119,079,811.03
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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.